Study Guide — 3.OA.D.9
Identify arithmetic patterns (including patterns in the addition tabl…
Find and extend patterns in numbers and shapes; use rules to predict next terms.
What this standard means
- Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.
- Apply identify arithmetic patterns (including patterns in the addition tabl… with models and explanation
- Extends a numeric or shape pattern
_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. Build growing patterns with blocks or drawings 2. Describe the rule in words 3. Find missing terms in a sequence
_See printable PDF for diagram._
Common mistakes
- Pattern breaks without noticing
- Describing only the change, not the rule
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 3.OA.D.9.
- [ ] Extends a numeric or shape pattern
- [ ] States the rule
- [ ] Finds missing terms
Materials for this standard
- Practice Problems — 20 printable sets
- Review — 10 difficulty levels
- Practice Test — 10 difficulty levels
- Answer key — for parents and tutors