Kindergarten · Science · Unit 3 of 11
Materials
Soft, hard, rough and smooth
What your child practices
Describing everyday materials (soft or hard, rough or smooth, bendy or stiff), what sinks or floats, and naming what things are made of, like wood, metal, glass and cloth.
Texas Essential Knowledge and Skills (TEKS) teks student expectation: K.6 · describing and sorting objects by their physical properties
How we explain it
Children can open this short lesson before they practice.
- Touch it. Is it soft or hard? Rough or smooth?
- Things are made of wood, metal, glass or cloth.
- Light things like leaves often float on water.
Example: Is a pillow soft or hard? Squeeze it in your mind. It squishes. Squishy things are soft. Answer: soft
Materials in Texas
In the Texas Essential Knowledge and Skills (TEKS), this is unit 3 of 11 in Kindergarten Science, after Animal Features and before Weather & Seasons.
Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.
- Kindergarten guide for Texas parents
- Printable Kindergarten Science sheet
- Texas report cards explained
Source: Texas Education Agency (TEA)
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Which one is made of cloth?
- 🔑key
- 👕T-shirt
- 🪨rock
👕 T-shirt
Hint: Cloth is soft and bendy. Our clothes are made of cloth.
Question 2
Which one is made of metal?
- 🔑key
- 👕T-shirt
- 📕book
🔑 key
Hint: Metal is hard and shiny. Keys are made of metal.
Question 3
Soft or hard? Tap a picture, then its basket.
Sort into: 🧸 soft · 🪨 hard
- 🧣scarf
- 🔨hammer
- 🪙coin
- 🧱brick
- 🧽sponge
- 🧶yarn
🧸 soft: scarf, sponge, yarn · 🪨 hard: hammer, coin, brick
Hint: Squeeze it in your mind. Soft things squish. Hard things don't!
Question 4
Which one feels smooth?
- 🥚egg
- 🍍pineapple
- 🪵tree bark
🥚 egg
Hint: Smooth things have no bumps. Run your finger over an egg!
Question 5
Which one is soft?
- 🧸teddy bear
- 🧱brick
- 🪨rock
🧸 teddy bear
Hint: Soft things squish when you squeeze them, like a teddy bear.
Question 6
Which one is hard?
- 🧦sock
- 🪨rock
- 🪶feather
🪨 rock
Hint: Hard things don't squish when you press on them.