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Grade 1 • North Carolina · Mathematics

Equal Equations & Missing Numbers: True/False Equations Within 20 | Grade 1 PowerPoint

A complete 30-slide Grade 1 mathematics lesson on understanding the equal sign to decide whether addition and subtraction equations are true (NC.1.OA.7) and finding the unknown whole number in an equation with three whole numbers (NC.1.OA.8). Students compare both sides, count on, use whole-and-parts, and prove their thinking through a warm-up, I Do/We Do models, guided and independent practice, a Prove It! partner game, and speaker-note guidance on every slide. Editable PowerPoint aligned to NC.1.OA.7 and NC.1.OA.8.

Required materials: 20 counters and a number line to 20 per student; paper and pencil. Everything else is in the deck.

Formats
PPTX · 0 main pages · 30 editable slides
Lesson time
One 45–60 minute lesson, or two shorter sessions
Includes
Teacher guidance + answer guidance

$7.99 USD

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One-time purchase · Single-teacher license
Printable PDFs and editable PowerPoint included. Account required for purchase and download.

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RESOURCE PREVIEW

See what you’re buying

Sample lesson slide: Compare both sides — 4 + 2 = 3 + 3 to prove an equation is true, from the Grade 1 Equal Equations & Missing Numbers PowerPoint (NC.1.OA.7 and NC.1.OA.8).

Sample 1 from Equal Equations & Missing Numbers: True/False Equations Within 20 | Grade 1 PowerPoint
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All 30 slides of “Equal Equations & Missing Numbers: True/False Equations Within 20 | Grade 1 PowerPoint” are shown above, each with SAMPLE watermarks, so you can review the complete resource before buying. The purchased download is the clean, unwatermarked original. Please don’t redistribute preview screenshots.

How this resource helps

Equal Equations & Missing Numbers is a complete Grade 1 mathematics lesson on the meaning of the equal sign and finding unknown numbers, built for projection and direct instruction. The lesson names both standards, sets the goal, and builds vocabulary — equal sign, equation, true, false, unknown — before a warm-up and math talk. Students learn to compare both sides to decide whether an equation is true, then use count-on, whole-and-parts, and how-many-left strategies to find a missing number and check their answer. I Do models, We Do practice, guided and independent practice, a Prove It! partner game, an exit ticket, and math talk give every student a way to show their thinking. Every slide carries complete speaker-note guidance — the answer, the questioning moves, and what to listen for — so the lesson is ready to teach the first time. Aligned to North Carolina Grade 1 Mathematics Standards NC.1.OA.7 and NC.1.OA.8. Suggested pacing: one 45–60 minute lesson, or split across two shorter sessions; local pacing varies.

What’s Included

  • 30-slide editable PowerPoint (PPTX)
  • Standards, goal, and essential question
  • Vocabulary: equal sign, equation, true, false, unknown
  • Warm-up and math talk
  • I Do / We Do modeled strategies for comparing sides and finding unknowns
  • Guided and independent practice slides
  • Prove It! partner game and game board
  • Exit ticket and math talk
  • Complete speaker-note teacher guidance on every slide
  • Single-teacher classroom license

Resource details

Grade / course
Grade 1 • North Carolina
Subject and resource type
Mathematics · Editable PowerPoint lesson
Files
0 main PDF pages · 30 editable slides · PPTX
Estimated completion time
One 45–60 minute lesson, or two shorter sessions
Answer key
Yes. Worked answers, sample student responses, and questioning guidance appear in the speaker notes of every slide, including the warm-up, modeled strategies, guided practice, Prove It! game, exit ticket, and math talk.

Standard or objective

NC.1.OA.7 — Apply understanding of the equal sign to determine if equations involving addition and subtraction are true. NC.1.OA.8 — Determine the unknown whole number in an addition or subtraction equation involving three whole numbers. North Carolina Grade 1 Mathematics.

Printing and preparation

Print on US Letter paper at actual size. Separate student practice and assessment from the teacher guide and key. Review the model and prepare needed support materials.

License

Single-teacher classroom license under the store’s published policies. One teacher may use the resource with their own students or assign it through a password-protected classroom platform. Do not resell, redistribute, share with other educators, or post publicly. See the full license. See the full license.

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