Nova shows a picture of a playground.
There is a metal slide, rubber mats and wooden benches.
"Why so many materials?" Rocket asks.
Raven looks closely. "What do you notice about each job?"
Nova sparkles. "Great question! Each part has a different job."
Engineers test materials before they build.
They pick the property that fits the job.
Soft mats help a fall feel gentler.
Strong benches hold many people.
| Sentence | True or false? |
|---|---|
| Engineers choose materials by their properties. | ? |
| A paper towel makes a good rain coat. | ? |
| A fair test helps us pick the best material. | ? |
Let us review this week's sight words.
Look at each word. Say it. Spell it.
Cold: C-O-L-D.
Does: D-O-E-S.
Don't: D-O-N-T.
Fast: F-A-S-T.
Trees: T-R-E-E-S.
Never: N-E-V-E-R.
Started: S-T-A-R-T-E-D.
City: C-I-T-Y.
Earth: E-A-R-T-H.
Eyes: E-Y-E-S.
You think like an engineer! Next week we build big things from small pieces.