Mr Collins' Mathematical Stories - 'The Pythagosaurus Rex'

This is the first of a series of 'stories' I have written for my students. This story involves some dinosaurs ('trinosaurs') in the shapes of common triangles. The 'trinosaurs' love to work out each others' perimeters and areas but have trouble working out their areas when they don't know their heights - cue 'The Pythagosaurus Rex' - who helps the other 'trinosaurs' work out their missing lengths (heights) using Pythagoras' Theorem. The story includes explaining how to find the perimeter and area of triangles (no trig involved), then explaining Pythagoras' theorem and some questions to attempt (answers at the back of the book).
All pictures hand drawn by me!
I show the story to my students at the start of teaching Pythagoras and get them to read it aloud in class - can be quite fun as it's a change from 'the norm'.