K-5 friendly lesson
One small step at a time.Read the idea, try the activity, and celebrate each win as you go.
Joints and Movement
Joints let you bend, twist, and reach.
Do this: Read the concept below, then try the quiz or activity.
Lesson 5 of 18
Concept
Different joints move in different ways: hinges (elbow, knee) bend; ball-and-socket (shoulder, hip) swing; pivot (neck) turns.
Sort the Joints
Unsorted
Elbow
Knee
Shoulder
Hip
Neck
Hinge
Ball-and-socket
Pivot
How an arm bends (steps)
These steps are out of order — can you fix them?
1.Muscle pulls
2.Joint bends
3.Brain sends signal
4.Hand moves