Acrobat Academy Teacher GuideAcrobat Academy Teacher Facilitation Guide Grade Level 5th Grade Learning Objective Students will master the "Keep, Change, Flip" algorithm to accurately divide fractions through conceptual visualization and procedural practice. Required Materials Flip-It Fraction Cards Acrobat Practice Mats Dry Erase Markers Lesson Slide Deck Total Time 45 MIN Lesson Pacing 5 MIN Warm-up: Fluency Sprint Goal: Prepare students for the multiplication step of fraction division. Call out rapid-fire multiplication facts (e.g., "3 times 7!", "5 times 4!"). Students write only the product on their whiteboards and hold them up. Keep the energy high! 10 MIN Instruction: The Video Breakdown Use the embedded video in the slides starting at 3:30. 3:45 PAUSE: Introduce the "Keep, Change, Flip" hand motions. (Keep = Hand flat, Change = Hands cross, Flip = Wrist twist). Have the class chant it together. 4:30 PAUSE: Ask: "Why did the numerator 3 stay the same? What did we change the division sign into?" 5:15 PAUSE: Ask students to predict the final simplification before the narrator finishes. 20 MIN Activity: Flip-It Cards Pairs work to visualize the reciprocal. Students draw two fraction cards. On their Practice Mat, they layout the cards. They must physically flip the second card over to reveal the reciprocal (turning it upside down) before solving the problem. This tactile motion reinforces the concept of the reciprocal. 10 MIN Closure: Grand Finale Exit Ticket Distribute the Exit Ticket. Students must solve one problem and write one sentence explaining the "Flip". Ask: "What happens to the divisor when we flip it?" Academy Vocabulary Dividend The number being divided (the "Keep" fraction). Divisor The number we divide by (the "Flip" fraction). Reciprocal What you get when you flip a fraction upside down. Algorithm A step-by-step procedure for solving a problem.
The Great Flip SlidesMath Circus Presents The Great Flip Mastering Fraction Division with Keep, Change, Flip Acrobat Academy Fluency Sprint 5:00 Get your whiteboards ready! I'll call out a problem. You write the product and hold it up! Example 4 × 8 32 The Secret Formula K KEEP Leave the first fraction exactly as it is! C CHANGE Change division into multiplication! F FLIP Flip the second fraction to its reciprocal! Acrobat Training Watch & Learn Embedded media Get Ready to Chant! When the video reaches 3:45, we will stand up and chant "Keep, Change, Flip" with our hand motions! Acrobat Hand Signals KEEP One hand flat in front of you. Don't move! CHANGE Cross your arms into an "X" for multiplication! FLIP Rotate your hand 180 degrees. Upside down! The Routine 3 5 ÷ 2 7 Keep 3/5 Change × Flip 7/2 Your Turn: Practice Mat Can you perform this flip on your whiteboard? 2 3 ÷ 4 5 Check Your Routine: Keep 2/3 Change to × Flip to 5/4 Flip-It Cards 1 Draw Two Pick two cards from the deck. Place them on your practice mat. 2 Physical Flip Physically turn the second card upside down to reveal the reciprocal! 3 Solve & Rotate Solve on your mat. Then, swap roles with your partner! Remember: Only the second fraction flips!
Flip-It Fraction CardsFlip-It Cards Acrobat Academy Prop Set SET-ID: FRAC-DIV-05 FLIP FLIP 1 2 FLIP FLIP 3 4 FLIP FLIP 2 5 FLIP FLIP 5 8 FLIP FLIP 3 7 FLIP FLIP 4 9 Instructions: Cut along the thick black lines. Laminate for durability. Use with the Acrobat Practice Mat.
Acrobat Practice MatAcrobat Practice Mat Keep • Change • Flip Student Name Date The Original Act (Division) Dividend ÷ Divisor The Flip Routine (Multiplication) Keep Change × Flip Grand Finale (Solve & Simplify) "Keep the first, change the sign, flip the second every time!"
Grand Finale Exit TicketGrand Finale Exit Ticket • Fraction Division Name: ______________________ Date: ________ Level 1: Basic Flip The Challenge Solve the division problem below using the Keep, Change, Flip routine. 4 5 ÷ 2 3 Show Your Work Final Answer: The Acrobat's Secret In your own words, why do we flip the second fraction into a reciprocal? Duplicate Ticket Grand Finale Exit Ticket • Fraction Division Name: ______________________ Date: ________ The Challenge … Show Your Work
Grand Finale Answer KeyGrand Finale Answer Key Teacher Reference • Exit Ticket Solutions Official Key The Challenge: \( \frac{4}{5} \div \frac{2}{3} \) Step-by-Step Algorithm K Keep the first fraction: \( \frac{4}{5} \) C Change sign to multiply: × F Flip the second fraction: \( \frac{3}{2} \) Final Calculation \( \frac{4 \times 3}{5 \times 2} \) = \( \frac{12}{10} \) Simplified Result \( \frac{6}{5} \) or 1 \( \frac{1}{5} \) The "Why" Behind the Flip Exemplar Student Response: "Dividing by a fraction is the same as multiplying by its reciprocal because division and multiplication are opposite (inverse) operations." Key Vocabulary to look for: • Reciprocal • Inverse • Opposite • Equivalent Common Errors: • Flipping the first fraction instead of the second. • Keeping the division sign while flipping. • Adding numerators instead of multiplying.
