Classification of Materials

How did EJ decide to classify his candy?

• by size
• by color
• by texture
• by hardness

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Which word describes grouping objects based on properties?

• clean
• organize
• arrange
• classify

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When you can easily slide your hand over something it is __________.

• rough
• hard
• smooth
• soft

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EJ's blanket does not feel good on his skin because it is ___________.

• smooth
• rough
• warm
• cold

Tags

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A slide is _________ so that we can quickly go down it.

• rough
• smooth
• soft
• hard

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A toothbrush has bristles that are ________ so they can clean our teeth.

• rough
• smooth
• soft
• colorful

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NGSS.2-PS1-1

Since metal and wood don't change their shape they are ________.

• liquid
• gas
• hard
• soft

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Addisyn's rubber hammer doesn’t work because it is _________.

• soft
• hard
• smooth
• rough

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Building materials need to be ________ so that they are sturdy and strong.

• rough
• soft
• big
• hard

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How many ways can you classify objects?

• 1
• 2
• 3
• It depends on the materials

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