Earth & Space
Pouring solids, slow liquids and materials that are hard to place — testing our definitions.
⏱ Whole lesson ≈ 44 min · pick a tier in the bar, or leave on "All"
Recap of last lesson: the three states.
A solid keeps its ____.
Is sand a solid or a liquid? It pours… what do you think?
Introduce pouring solids and slow liquids.
Sand pours, but it is a solid — it is made of many tiny solid grains. Honey and treacle are liquids that flow slowly. Some materials, like toothpaste, are hard to sort at all.
Sand is made of tiny ____.
Why can sand pour even though it is a solid?
What makes toothpaste hard to sort as a solid or a liquid?
Teacher models. Watch, then explain why sand fooled us.
Swap the clip: change the ID after /embed/ (now 24Yromifcss).
Sort tricky materials together — some may sit between groups.
🏖️ sand 🍯 honey 🪥 toothpaste 🧴 shaving foam 🫗 oil 🪨 rock
Play the animation. Bust: anything that pours is a liquid.
Sand pours like a liquid, but it lands as a pile of separate solid grains — water spreads into one puddle.
Watch for: "if it pours, it's a liquid" and "only liquids can be poured".
Decide together, giving a reason each time.
On your own. Sort each material, then write at your tier.
Tap a card to sort it…
Sort the cards. Then finish: Sand is made of tiny ____.
Sort them, then explain why sand is a solid even though it pours.
Sort them, then explain why toothpaste is difficult to sort.
Answer at your tier, then hand it in.
Explain how you can tell a pouring solid from a liquid.