1) If a carpenter drops nails into sawdust, what should he do 2) Why do we use a sieve to separate sand from gravel when making cement? 3) At the beach, you collect shells but your bag has small stones too. How would you separate them? 4) Your mom is cleaning rice before cooking and finds small stones. Which method should she use to remove them? 5) At home, you mixed large kidney beans with smaller lentils by mistake. Which method could help separate them? 6) In a craft box, colorful plastic beads are mixed with small metal paper clips. How would you separate them?

solid solid separation

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?