Interdisciplinary Curriculum Developer and Educator with a background in Astrophysics and a flair for great no-nonsense resources based on classroom experience.
Interdisciplinary Curriculum Developer and Educator with a background in Astrophysics and a flair for great no-nonsense resources based on classroom experience.
Animals and organisms of various kinds can have a massive impact on our planet and their environment, so much so, that they can terraform the landscape around them. This article celebrates examples such as algae, beavers, migratory birds and many others that change the world around them.
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
The Doppler Effect is key to understanding a great deal of motion and technology towards and away from the observer. The Doppler effect helps use with technology for ultrasound in medicine, radar for planes, submarines and weather radar etc. A great topic to learn about with a useful teaching resource.
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
Other Articles on Astronomy and Astrophysics:
Comets Article #2 - link here
The Sun Article #3 - link here
Planetary Rings Article #4 - link here
Asteroids Article #5 - link here
Dark Matters Article #6 - link here
Space Exploration Article #7 - link here
The Great Red Spot Article #8 - link here
Black Holes Article #9 - link here
The Space Race Article #10 - link here
Astronomy Science Articles #1-10 - link here
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This IB MYP NGSS related unit planner showcases how you can teach using both the IB MYP and the NGSS together. The content for this unit is chemical change and energy with regards to exothermic and endothermic reactions. This unit is aligned with the NGSS as well as the MYP criteria.
During this unit students will design / research their own experiments on endothermic or exothermic reactions that they would like to perform. Students will record their work during the experiment, analyse what occurred and why. (Objective B / C).
Students will also create a presentation (individually or in small groups at teacher’s discretion) on endothermic / exothermic reactions and how they have impacted on society or in their lives. Particularly with regards to industrial level reactions used in modern manufacturing processes (Objective D).
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This Mechanic Maths Article highlights some of the useful mathematics knowledge and examples where mechanics might need to use mathematics in their everyday work.
This mathematics article provides the answer to that age old student question: When will we ever use this in real life? Well the answer as it turns out could be given in the perfect grab and go, print and provide resource that can supplement lessons.
It is an article with questions to check comprehension and inspire mathematical thinking with real life connections. I am very happy with this small series of mathematics articles and they are rich with information and the why and when of mathematics. Each mathematics article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable). They also have two images as well to give a bit of visual flair for students to enjoy.
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase English literacy in your class
A weekly reading task
To teach mathematics and English in an interdisciplinary manner
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
To get students to connect the mathematics they are learning to real life
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This IB DP Physics sub-topic material covers all key knowledge needed for a given sub-topic. These materials are aligned to the 2023 syllabus onwards. They are developed by an IB DP Physics teacher who also knew the previous 2016 syllabus as well. While perhaps not the flashiest format, they are consistent and use Microsoft software and PDFs which is readily accessible to almost anyone. They contain Teacher made graphics which show the exact concept to be taught or question to be asked and are all original to The Teaching Astrophysicist.
WHY / WHEN TO USE:
Helps with revision on a topic
The base for covering relevant teacher materials
Great for initial learning and practice
Memorization of key concept and knowledge
WHAT’S INCLUDED:
A set of physics flashcards - word doc and PDF
A set of physics flashcards - Powerpoint
2 detailed long response questions - DP style - word doc and PDF - both with and without answers (ie: Teacher version and student version)
20 Multiple Choice Questions (MCQs) - word doc and PDF - both with and without answers (ie: Teacher version and student version)
A detailed set of notes - word doc and PDF
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This mathematics article provides the answer to that age old student question: When will we ever use this in real life? Well the answer as it turns out could be given in the perfect grab and go, print and provide resource that can supplement lessons.
It is an article with questions to check comprehension and inspire mathematical thinking with real life connections. I am very happy with this small series of mathematics articles and they are rich with information and the why and when of mathematics. Each mathematics article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable). They also have two images as well to give a bit of visual flair for students to enjoy.
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase English literacy in your class
A weekly reading task
To teach mathematics and English in an interdisciplinary manner
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
To get students to connect the mathematics they are learning to real life
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This IB DP Physics sub-topic material covers all key knowledge needed for a given sub-topic. These materials are aligned to the 2023 syllabus onwards. They are developed by an IB DP Physics teacher who also knew the previous 2016 syllabus as well. While perhaps not the flashiest format, they are consistent and use Microsoft software and PDFs which is readily accessible to almost anyone. They contain Teacher made graphics which show the exact concept to be taught or question to be asked and are all original to The Teaching Astrophysicist.
WHY / WHEN TO USE:
Helps with revision on a topic
The base for covering relevant teacher materials
Great for initial learning and practice
Memorization of key concept and knowledge
WHAT’S INCLUDED:
A set of physics flashcards - word doc and PDF
A set of physics flashcards - Powerpoint
2 detailed long response questions - DP style - word doc and PDF - both with and without answers (ie: Teacher version and student version)
20 Multiple Choice Questions (MCQs) - word doc and PDF - both with and without answers (ie: Teacher version and student version)
A detailed set of notes - word doc and PDF
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This set of Animal STEM Careers Colouring Sheets provides a great and engaging activity to bring young students into interest in STEM. Each page includes an animal engaging in a particular profession or activity associated with STEM. There are a set of pages with these titles and a set of pages without those titles as well, so you can use them as you see fit. They are both adorable and enjoyable - I think - so please use them as you wish and happy teaching and inspiring students to think STEM and learn a little more about STEM careers
WHY / WHEN TO USE:
Great for a brief brain break for young students
Help as a reward activity in science class
Students can pick and choose which pages they like the best
Good to inspire research into the careers shown
WHAT’S INCLUDED:
41 pages in Word Docs form with titles of careers and animals
41 pages in Word Docs form without titles of careers and animals
41 pages in PDF form with titles of careers and animals
41 pages in PDF form without titles of careers and animals
More posters will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist! As well as a wealth of other resources for various age groups on mathematics and science topics.
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable).
WHY / WHEN TO USE:
Useful for substitute (sub) teaching
To extend students
To increase scientific literacy in your class
A weekly reading task
Great as a lesson filler when class goes too fast
To inspire students on a particular topic
Give a selection of these articles for students to choose from
WHAT’S INCLUDED:
3 page Word doc teacher version with answers
2 page Word doc student version with room to fill in answers (text boxes)
3 page PDF teacher version with answers
2 page PDF student version without answers (but space left to do so)
More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist!
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
These 50 Engineering Design Lesson Starter Questions cover every topic and sub-topic in the Next Generation Science Standards (NGSS) High School Engineering Design topic. These questions can serve as inspiration for full lessons, can be used to supplement existing materials you may have and give a different method of engaging with the content that students must cover in NGSS High School Engineering Design.
WHAT’S INCLUDED:
50 Engineering Design Lesson Starter Questions in Powerpoint Slides format (25 of these include activities that are associated with that question to support learning).
50 Engineering Design Lesson Starter Questions in Word Docs format (25 of these include activities that are associated with that question to support learning).
The Engineering Design Lesson Starter Questions in PDF Slides format
The Engineering Design Lesson Starter Questions in PDF Docs format
POSSIBLE USES:
Use these to start lessons with a specific goal in mind
Great for those students who finish early and could use more time and room for exploration on a given topic
These starter can inspire new lessons or different ways of teaching the content
Students could use these questions for an inquiry project of their own
COVERED STANDARDS:
HS.Engineering Design
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
These 50 Engineering Design Lesson Starter Questions cover every topic and sub-topic in the Next Generation Science Standards (NGSS) Middle School Engineering Design topic. These questions can serve as inspiration for full lessons, can be used to supplement existing materials you may have and give a different method of engaging with the content that students must cover in NGSS Middle School Engineering Design.
WHAT’S INCLUDED:
50 Engineering Design Lesson Starter Questions in Powerpoint Slides format (25 of these include activities that are associated with that question to support learning).
50 Engineering Design Lesson Starter Questions in Word Docs format (25 of these include activities that are associated with that question to support learning).
The Engineering Design Lesson Starter Questions in PDF Slides format
The Engineering Design Lesson Starter Questions in PDF Docs format
POSSIBLE USES:
Use these to start lessons with a specific goal in mind
Great for those students who finish early and could use more time and room for exploration on a given topic
These starter can inspire new lessons or different ways of teaching the content
Students could use these questions for an inquiry project of their own
COVERED STANDARDS:
MS.Engineering Design
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This Math Menu provides students with engaging and varied activities related to 1st grade math concepts and skills. The math menu is meant to support independent work for early finishers, homework options, math center work or as an extension activity.
This math menu is perfect for differentiation on the fly and to support fast students and those that need a variety of tasks to support their learning.
Task templates are included to support student learning, which are easy to print and use without prep. That’s right, NO-PREP printables! However, students can also record their work on regular paper or in a math notebook!
Ask students to cross off items as they go or compete with one another doing the classic game tic-tac-toe in a supportive and friendly learning method for another level.
Tasks Include:
Draw it
Map it
Design it
Line it
Student Choice
Wordweb
True or false
Match it
Emoji it
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist
This Math Menu provides students with engaging and varied activities related to 3rd grade math concepts and skills. The math menu is meant to support independent work for early finishers, homework options, math center work or as an extension activity.
This math menu is perfect for differentiation on the fly and to support fast students and those that need a variety of tasks to support their learning.
Task templates are included to support student learning, which are easy to print and use without prep. That’s right, NO-PREP printables! However, students can also record their work on regular paper or in a math notebook!
Ask students to cross off items as they go or compete with one another doing the classic game tic-tac-toe in a supportive and friendly learning method for another level.
Tasks Include:
Riddles
Emoji it
Game it
Line it
Student Choice
Fix it
True or false
Write it
Wordweb
If you have any questions, please feel to DM me on instagram @theteachingastrophysicist
Let’s Connect!
Be sure to follow my:
★ Blog
★ Instagram
★ Linkedin
★ Pinterest
All under the handle: The Teaching Astrophysicist