Sorting and Classifying — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A circle, a circle, and a circle are sorted by shape.
All three items are circles, so the sorting rule is shape.
2. Big, big, and big items are sorted by size.
All items are big, so the sorting rule for the group is size.
3. Red, red, and red items are sorted by color.
All items are red, so the sorting rule for this group is color.
4. A bird, a butterfly, and a bee all fly to move.
Birds, butterflies, and bees all fly, so they sort into the flying group.
5. A fish, a duck, and a frog all can swim in water.
Fish, ducks, and frogs all swim, so they sort into the swimming group.
6. A small square and a small circle share size, not shape.
Both are small but have different shapes, so they share size but not shape.
7. A toothbrush and soap go in the bathroom group at home.
Toothbrushes and soap are used in the bathroom, so they sort into that group.
8. Counting shows there are more red than blue when we compare.
We compare groups by counting how many are in each to see which has more.
9. Three apples and two pears means apples have more items.
Three is greater than two, so the apple group has more items than the pear group.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Bird, Butterfly, Bee
→ All can fly
All can fly
Fish, Duck, Frog
→ All can swim
All can swim
Spoon, Fork, Plate
→ Used in the kitchen
Used in the kitchen
Toothbrush, Soap, Towel
→ Used in the bathroom
Used in the bathroom
Each left group shares one rule, and the right side names that sorting rule.