Five pages that start ratios with pictures. Page 1 writes part-to-part ratios from pictures, both ways round, with a colon and with the word to. Page 2 adds part-to-whole ratios, written three ways (4:7, 4 to 7 and 4/7), then asks whether a ratio in a story compares part to part or part to whole. Page 3 turns it round: draw shapes for a ratio, then shade squares to show one. Page 4 picks the one ratio that matches a picture or a story from four choices. Page 5 finds equivalent ratios: the ratio for all the pictures and for one equal group, missing numbers, and pairs of ratios that are or are not equivalent.
Put a handful of two colors of counters on the table and ask for the ratio of red to blue, then blue to red: the order follows the words. Then ask for red to all the counters, and write it as a fraction too. Sort the counters into equal groups and ask what ratio each group shows. Page 4 is good to talk through: each wrong choice is a mistake someone could make.
Look for ratios around the house: forks to spoons in the drawer, or red socks to all the socks. A recipe works too: 2 cups of water for every 1 cup of rice. Ask what happens to the ratio when you make twice as much.
This pack supports the following Common Core State Standards for Mathematics:
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Ratios that compare two groups of pictures, part to part and part to whole. Students write ratios with a colon, with the word to and as a fraction, draw pictures for ratios, choose the ratio that matches and find their first equivalent ratios.
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