A song that helps students develop their ideas of three different vairables and the corrisponding lesson plan and handout to accompany the song. Rocket balloons are inflated balloons stuck to straws and the straw is threaded through a long piece of string

A work sheet which students have 3 blood sample pictures and they have to identify the components in the normal slide, explain differences in two other slides.

A marking grid for self or peer assesment for students. It should be used to help them understand what they need to know about ways the medical proffesion can see into the body without invasive surgery. Marks on the grid are guidlines to how many points are needed for each section