Twenty-four flash cards, eight to a sheet, one for every pair of equal fractions with denominators of 2, 3, 4, 5, 6, 8, 10 and 12, such as 1/2 = 4/8 and 2/3 = 8/12. Each front shows the equation with one number missing, most often the top of the second fraction; each back shows it finished, the missing number in blue. Print the pack double-sided and flip on the long edge: each back sheet is laid out mirrored, so every card's back lands behind its front. On a printer that prints one side, choose Fronts only under Print, put the printed sheets back in the paper tray, then choose Backs only. Fronts have a thick frame and backs a thin one, so a card turned the wrong way stands out.
Show a card and ask what the bottom number was multiplied by, then do the same to the top. Partners take turns finding the missing number and turning the card over to check. Fraction strips or a fraction wall help a child see why two fractions are equal.
Work through a few cards a day. Ask your child to explain each answer: "8 is 2 times 4, so the top is 2 times 1."
This pack supports the following Common Core State Standards for Mathematics:
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Flash cards for equal fractions such as 1/2 = 4/8, with a missing numerator or denominator on the front and the finished equation on the back. Students find the missing number, then turn the card over to check.
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