Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

You can use plastic straws or the barrel of an old ball-point pen to
make a bearing for an axle. The picture shows you two ways to fix
the bearings onto the body.
Two ways to fix the bearing onto the body.
QUESTIONS
1. What are the two ways used in the picture to fix the
bearing onto the body.
Tape and glue
2. What are some materials that you could use to make the
axle in the above picture?
Smaller straws, dowel sticks, sosatie sticks, etc.
You can also use plastic sign-board or strong corrugated
cardboard to make a body with wheels. Can you see how the axle
goes through the holes in the cardboard?
Chapter 4. Systems for moving things
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