Students are shown 8 triangles. They have to assess if the traingles shown are mathematically valid. Some of the triangles do not add up to 180 dregrees. Some triangles have clear acute angles lables as obtuse angles. As an extention, some pupils can give written reasons WHY some of the traingles are not correct. NOTE: These are not drawn to scale, and are not to assess students ability to measure angles with a protractor. They are as a test of student's knowledge about the internal angles of a triangle.

Full lesson Lots of whiteboard work Three exercises. Concentrating on writing the inequality. No manipulation.

Loads of shapes. Measure them. Add up the angles in each shape. What do you notice?

Very simple introduction to writing vectors in column notation, along with adding and multiplying them. Three example problem pairs, three matching exercises of questions, some mini whiteboard work and a plenary.

A really simple set of slides. First a little task on how to spot if two vectors are parallel, then one example, then 4 exam questions for students to work through.

Introduction to vector geometry. Includes examples and two exercises. One on simple questions where you just have to add the vector ‘routes’ and one that throws in some mid point stuff. NO PARALLEL LINES, COLINEAR POINTS OR PROOF HERE

A lesson on calculating efficiently with multiplication. Things like 5×17×2 (regrouping) 9×2+9×8 (distributive)

PowerPoint on column multiplication. *Starter with a focus on commutativity etc *Example problem pair to teach with *Some questions (a bit of a boring exercise, sorry) *A blooket *5 QQ to finish.

A really simple starter that should be the jumping off points for discussion. Loads of numbers with zeroes in. Some needed. Some not. Some COULD be needed (if you’re dealing with currency or bearings etc) A conversation starter.

Trying to aim for a mastery/in depth lesson, rather than getting all the index laws done in one lesson. Huge credit to Jo Morgan (@mathsjem). Nicked a lot from her for this resource. CHANGELOG: 2/10/22 Updated new style. Added some whiteboard work.

6 starters that help students connect the different words for addition, subtraction, multiplication and division. Lots of questions like ‘6 and 4 more’ and ‘4 lots of 6’ and ‘4 increased by 6’

Covering the two main types of function notation in IGCSE Maths. Goes through things like f(5), substituting integers, and f(x+2) substituting algebraic terms. Includes examples, excersises, a blooket, a learning a check. Full lesson.

Simple powerpoint containing some example problem pairs (best to print) and some questions on simple single event probability.

What is the hypotenuse? Finding the hypotenuse Finding the shorter side Mixed Questions I taught this over two lessons. There’s no fun questions here at all. This is all practice, practice, practice. I want my students to get the skills down before applying them.

Very much a zoom in on one particular skill. Multiplying up or down recipes. Some whiteboard work and some questions along with an example problem pair.

Covers simple interest, compound interest, appreciation and depreciation. 3 exercises and a few big questions. Example problem pairs for everything.

Covers sharing in two parts and three parts. Lots of questions. Printable pages at the end.

Deals with simplifying two part, three part ratios. Also includes a simplifying ratio colouring in puzzle, with loads of odd and weird ratios to discuss.

No context here. Just focused on questions about writing the formula and then finding values of y and x.

Covers writing equations, finding values and direct proportion involving things like x^2