Rule:
Super Sleuth Bonus: Make Your Own Pattern!
Pick a rule & write 5 numbers:
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→
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My Rule:
Master Detective Certificate Earned! Page 2 of 2
14. 50, 45, 40, 35, 30 (Rule: −5)
14 Questions
1. 21, 22, 23, 24, 25 (Rule: +1)
2. 12, 14, 16, 18, 20 (Rule: +2)
3. 10, 15, 20, 25, 30 (Rule: +5)
4. 40, 50, 60, 70, 80 (Rule: +10)
5. 12, 15, 18, 21, 24 (Rule: +3)
6. 12, 16, 20, 24, 28 (Rule: +4)
7. 35, 40, 45, 50, 55 (Rule: +5)
8. 19, 18, 17, 16, 15 (Rule: −1)
9. 24, 22, 20, 18, 16 (Rule: −2)
10. 27, 24, 21, 18, 15 (Rule: −3)
11. 55, 50, 45, 40, 35 (Rule: −5)
12. 30, 40, 50, 60, 70 (Rule: +10)
13. 4, 8, 12, 16, 20 (Rule: +4)
14. 16, 14, 12, 10, 8 (Rule: −2)
Suggested Differentiation & Retesting Use:
• Pattern Detectives: Use for whole-class guided independent practice after slides.
• Secret Codes: Ideal for homework, small-group intervention, or partner stations.
• Mystery Tracks: Perfect for end-of-week quiz, spiral review, or post-assessment.
Alternate Answer Keys Page 2 of 3
Misconceptions • Questioning • Differentiation
Grade 1 Standards
Misconception 1: Always adding by 1
Student error: Sees "3, 6, 9, 12, ___" and writes "13" because they assume any sequence counts by ones.
→ Fix: Ask "How many hops from 3 to 6? Count on your fingers: 4, 5, 6... that's 3 hops, not 1!"
Misconception 2: Adding when numbers shrink
Student error: For "10, 9, 8, 7, ___", student writes "8" or adds 1 to 7.
→ Fix: Emphasize Clue Question 1: "Are numbers getting bigger or smaller? If smaller, subtract!"
Misconception 3: Writing the next number as the rule
Student error: In the "Rule:" box, the student writes "15" instead of "+3".
→ Fix: Explain that the rule is the "secret jump recipe" that works between *all* the numbers.
To identify pattern direction:
To verify jump consistency:
Support / Tier 2
Provide a physical 1-120 chart and two-color counters. Have students place counters on the numbers and count the empty spaces between them.
On-Level / Tier 1
Encourage finger counting-on or drawing hop arrows above the numbers: "+3, +3, +3". Remind students to double-check their answer.
Extension Sleuths
Introduce alternating 2-step rules (e.g., +2 then +1: 2, 4, 5, 7, 8, 10, ___) or non-standard starts like counting by 5s starting at 3.
Aligned with Common Core 1.OA & 1.NBT standards Page 3 of 3
Rule:
Super Sleuth Bonus: Make Your Own Secret Code!
Pick a rule & write 5 numbers:
→
→
→
→
My Rule:
Master Detective Certificate Earned! Page 2 of 2
Rule:
Super Sleuth Bonus: Make Your Own Mystery Track!
Pick a rule & write 5 numbers:
→
→
→
→
My Rule:
Master Detective Certificate Earned! Page 2 of 2
