Sorting into categories
Classify objects into given categories, count the number in each category, and sort the categories by count
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Teaching Table · Reviewed guide
Set out your lesson
“Sorting puts things into groups that share a rule. After sorting, we count each group and compare the counts with most and fewest.”
Bring to the table
- A mixed set of large paper or cardboard shapes: circles, squares, and triangles
- Three labeled spots: Circle, Square, Triangle
Full guide and materials
- A mixed set of large paper or cardboard shapes: circles, squares, and triangles
- Three labeled spots: Circle, Square, Triangle
- Step 1. Mix the shapes in one pile and show the three labels.
- Step 2. Have your child sort every shape into Circle, Square, or Triangle.
- Step 3. Count each group and say the three totals aloud.
- Step 4. Ask which category has the most and which has the fewest.
- Quick check. Success means your child sorts all shapes correctly, counts each category, and identifies the most and fewest groups.
Worked example. 7 circles, 2 squares, and 5 triangles means circles have the most and squares have the fewest.
Optional challenge. After sorting by shape, re-sort the same set by color if colors differ, then compare the new counts.
What to notice. Save a parent note with the three category counts and the most/fewest comparison.
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Teaching approaches
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1 approach
Sorting puts things into groups that share a rule. After sorting, we count each group and compare the counts with most and fewest.
Spend about 15 minutes sorting shapes by type, counting, and comparing groups.
Family records and proof options
Keep a record of your learning
Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Learning resources
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Check understanding
- Sort a set of shapes by colour and count how many in each group
- Sort objects by size (big/small) and state how many in each category
- Identify which category has the most/fewest after sorting and counting
“Can your child sort a pile of objects — like buttons, coins, or toy animals — into groups and count how many are in each group?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Data & Statistics
- Age range
- Ages 5–6
Standards