This activity explains to students that heart muscle cells are specialised, and that if they join together to form tissues in a disorganised way in the heart, they cannot do their job properly.
Oxford Sparks is a portal for engaging with a wealth of exciting science taking place across Oxford University. Get more great resources from the Oxford Sparks here and on its website at oxfordsparks.ox.ac.uk. You can also follow on Twitter at @OxfordSparks.
Sign up here for your free Brilliant Teacher Box Set
Get 8 KS3/4 maths lessons with expert teaching techniques