GRADE 3 Math Mystery Activity - Fun Review of all CCSS Topics

Grade Levels
2nd - 4th, Homeschool
Resource Type
Formats Included
  • ZipΒ (21 pages)
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Is your class ready to solve a mathematical mystery?

This is a fun and exciting way to review the topics covered by the Grade 3 Common Core maths standards at the end of the year - or an exciting way to start Grade 4 by reviewing the previous year's work.

Your students will be presented with a story set up, suspect profiles and 5 mathematical clues covering different topics learnt throughout the year. It's their job to use their mathematical problem solving skills and work as a team to narrow down the suspects and find the culprit!

Download includes:
- 5 Mathematical clues covering standards from all 5 CCSS topics learnt in Grade 3 (OA, NBT, NF, MD, G)
- Story outline page and Suspect profiles
- Complementary Slideshow to set the scene at the beginning and to reveal the solution at the end
- Set up instructions
- Answer key with solutions for each clue

Certain to create a unique and engaging lesson!
Total Pages
21 pages
Answer Key
Teaching Duration
50 minutes
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to see state-specific standards (only available in the US).
Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.
Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths 𝘒 and 𝘣 + 𝘀 is the sum of 𝘒 Γ— 𝘣 and 𝘒 Γ— 𝘀. Use area models to represent the distributive property in mathematical reasoning.
Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.
Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.


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