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Curriculum › Math ›Grade 4

Grade 4 Math · Level 3, Equivalence, Operations & Decimals

Equivalent Fractions

How the lesson starts: Equivalent Fractions

  1. Ollie's Choco Factory

    Hi there! Meet Ollie the octopus. He runs a chocolate bar factory under the sea. His machines cut bars into different numbers of pieces. Can different cuts give the same amount of chocolate? Let's find out!

  2. Same bar, new cuts

    Look at these three chocolate bars. The first is cut into 2 parts, with 1 shaded. The second: 4 parts, 2 shaded. The third: 8 parts, 4 shaded. The same amount of chocolate every time! So 1/2 = 2/4 = 4/8.

  3. Find the multiplier

    Ollie's machine turned 3/4 into 9/12. What did it multiply by? Look at the top: 3 × □ = 9, so □ = 3. Check the bottom: 4 × 3 = 12. Yes! Top and bottom were both multiplied by 3.