Sorting Objects
Changing Objects
Different Materials
Parts Working Together
100

how big or small something is

size

100

at a later time

after

100

a hard, clear material that breaks easily

glass

100

a bar with handles that is used to move a bike in one direction

handlebar

200

to put things into groups by how they are the same

sort

200

at an earlier time

before

200

a material used to make clothes

cloth

200

a covering for a wheel made of rubber and filled with air

tire

300

the way something looks (for example: round or square)

shape

300

to put two or more things together

mix

300

a shiny material that can be melted; heat and electricity can move through it

metal

300

a part of a bike that you press with your foot to move forward or backward

pedal

400

how an object feels when you touch it

texture

400

to lay one part of an object over the other part to cover it

fold

400

a strong, stretchy material used to make tires, erasers, balls, and many other things

rubber

400

a strong form that holds the parts of an object together

frame

500

something that has a shape and can be felt or seen

object

500

to curve

bend

500

a hard material that does not break easily

plastic

500

a part of the bike that connects the pedals to the wheels and allows the wheels to turn

chain

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