Topic 33 Bones and muscles — what needs James (31)
28 question types · 3 lessons. Tap a button on each card; the ruling goes to the build and the card shows it as ruled.
Question types
Question types (28 to rule on) →
The lessons (3)
Each lesson in teaching order: its one-line summary, the article, the script and the quiz, then your ruling.
Topic 33 · Lesson 1 · Video / article words: 150 / 296 · Quiz items: 11 · Figures: 6
Lesson 1 The skeleton: bones that hold you up and protect the soft parts inside
Hard, stiff bones hold the body up (standing, sitting, lying) and give it its shape; the skull protects the brain, the ribs protect the heart and lungs; all the bones together are called the skeleton; "skeleton" typed last
Topic 33 · Lesson 2 · Video / article words: 148 / 315 · Quiz items: 11 · Figures: 7
Lesson 2 The muscles: they pull on bones, and they can only pull
The lump is a soft part fixed to the arm bones; squeezing, it gets shorter and fatter and pulls the forearm up; letting go, it goes long and thin and pulls on nothing; a muscle can pull, but it can never push; the calf and jaw muscles pull too; the heart is a muscle fixed to no bone; "muscle" typed last
Topic 33 · Lesson 3 · Video / article words: 149 / 344 · Quiz items: 9 · Figures: 6
Lesson 3 How the skeleton and muscles work together: a pair of muscles at a joint
The arm bends at the elbow and wrist, not along the forearm; a joint is also the place where two bones meet; bones move at the joints; two muscles across the elbow, the front one bending and the back one straightening; the same pair at the knee; FRQ on a dancer's ankle
Skill: write-like-james @ 5bc12e2 · built 8 October 2026 by build_tools_needs_you.py