Fill in each blank with the correct word from the lesson.

1. So remember — _______ works whenever two things are different sizes.
2. Sieving is an important topic in _______.
3. We can learn about _______ from this lesson.

Choose the best option for each question.

1. Why does sieving work?
   a) Big and small particles are different coloursb) Big and small particles have different sizesc) One is wet, one is dryd) A magnet pulls them apart
2. When sieving sand and pebbles, where does the sand end up?
   a) Stays on topb) Falls through the holesc) Sticks to the sieved) Disappears
3. Which of these is sieving best for?
   a) Salt dissolved in waterb) Iron filings in sandc) Stones from a tiny bowl of riced) Bran from flour

Write T for True or F for False in the brackets.

1. Big and small particles have different sizes is one of the key concepts in the lesson on Sieving.
2. Big and small particles are different colours is the main topic of this lesson.
3. Falls through the holes is one of the key concepts in the lesson on Sieving.
4. Stays on top is the main topic of this lesson.

1. In your own words, explain what Sieving means.
2. List two things you learned from this lesson on Sieving.