Study Guide — K.CC.C.6

Compare groups of objects

Compare sets by matching, counting, or looking — use real objects at home.

What this standard means

• Compare two groups using matching
• Use counting to compare when groups are large
• Use words: greater than, less than, equal to
• Explain how they know which is more

_See printable PDF for diagram._

How to use the 20 practice sets

| Sets | When to use | | --- | --- | | 1–5 | Intro — explore together, short written items | | 6–10 | Core skills — diagrams and written practice | | 11–15 | Mixed review — explain thinking | | 16–20 | Stretch — word problems and mastery tasks |

Pacing: 10–15 minutes per session.

How to practice

1. Match objects in two rows 2. Count each group when unsure 3. Use snacks or toys for daily compare talk

_See printable PDF for diagram._

Common mistakes

• Comparing by size of objects, not quantity
• Saying “bigger” without counting
• Not lining up for one-to-one match

Review and practice tests

1. Start Review 1/10 when sets 1–3 feel comfortable. 2. Move up one review level with little help. 3. Use Practice Test 4/10–6/10 for mid-standard checks. 4. Practice Test 10/10 is the mastery bar for K.CC.C.6.

• [ ] Compare groups up to 10 with matching
• [ ] Uses comparison vocabulary correctly
• [ ] Counts when groups cannot be matched easily

Materials for this standard

• Practice Problems — 20 printable sets
• Review — 10 difficulty levels
• Practice Test — 10 difficulty levels
• Answer key — for parents and tutors