4th Grade Math Mystery Spring April Math Review: April Alien Ambush

Description Engage your students this April with a high-stakes intergalactic mission! There’s an imposter amongst the gnome agents, and the G.I.B. needs your 4th-grade agents to step up. This math mystery turns standard test prep into an immersive detective experience. Students must solve five math clues to eliminate suspects and uncover the truth behind the April Alien Ambush. This resource is perfect for April math centers, early finishers, sub plans, or a fun whole-class review before end-of-year testing! HOW IT WORKS: Students read the mystery story (or watch the video hook) about a stolen Chromatic Core from the Gnomes in Black (G.I.B.) agency. They must complete five math worksheets to unlock clues. Each clue helps them eliminate suspects until only the imposter gnome agent remains! Math Skills Included (Common Core Aligned): This mystery targets the “Power Standards” 4th-grade teachers are looking for in the second half of the year: Clue 1: Factors, Multiples, & Prime/Composite Numbers (4.OA.B.4) – Identifying factor pairs, common multiples, and distinguishing between prime and composite numbers. Clue 2: Adding Fractions (10ths & 100ths) (4.NF.C.5) – The “April Essential”: Converting tenths to hundredths to add fractions with unlike denominators. Clue 3: Advanced Multi-Step Word Problems (4.OA.A.3) – Using the four operations to solve complex, real-world scenarios. Clue 4: Area & Perimeter with Missing Sides Word Problems (4.MD.A.3) – Applying formulas to find unknown dimensions and total perimeter/area. Clue 5: Elapsed Time & End Times (4.MD.A.2) – Calculating the end time based on start times and durations. What’s Included? Video Hook and Ending Clips: Two fun videos to begin and end the activity. <View the video hook here.> 5 Math Clue Pages (Engaging, clean layouts with code-cracker puzzles). Suspect List & Elimination Tracker to build excitement and logic skills. Instructional “Mission Briefing” to set the scene. Full Answer Key for quick and easy grading. Printable Certificates for students who solve the case! Printable PDF: Easy “Print & Go” worksheets. Google Slides: Digital version included for 1:1 classrooms.   �� WHY TEACHERS LOVE IT: Easy Prep: Just print and solve! Self-Checking: The “Crack the Code” nature allows students to self-correct. High Engagement: Even reluctant mathematicians love solving the mystery. Feels like a game, but there is significant math practice and consolidation involved. Effortless Assessment: The “Crack the Code” format allows you to verify student progress at a glance—if the code is correct, the math is correct.