Giant Double-Sided Magnetic Fraction Circles. Demonstrate fractions, percentages and equivalencies on your whiteboard.
Helps students understand relationships between concepts of fractions and percentages — labeled with fractions on one side and percentages on reverse.
Extends learning through color-coded coordination to Rainbow Fraction® resources.
Supports key NTCM Standards.
Includes 9 circles, each measuring 7.5", includes whole, 1/4, 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10 and 1/12.
Includes Activity Guide.
Display 1/2 using the magnetic pieces. Ask students to identify the piece. Ask, “Are there other pieces the same size as 1/2? How can you find out?” Discuss ways of finding equivalent parts, including placing pieces side by side of others to compare. Give students time to handle the magnetic pieces to find other fractional representations for 1/2. Ask students to record their findings on a piece of paper or in a math journal. You can extend this
activity by asking students to find equivalent fractions for other amounts such as 6/8, 2/6, and 2/3.
Fractions and Percentages
Display some of the magnetic pieces showing percentages. Guide students to understand that a fraction can be expressed as a percentage by converting the fraction to a decimal number, then multiplying by 100 to obtain a percentage (since percent means per 100). For example,
1/2 = 0.5 = 50%. Place one fraction piece on the whiteboard and ask students to compute the percentage. Flip the fraction piece over to check answers.
Note: Store the magnets flat to prevent from warping. If the magnets do curl, gently bend them back in the opposite direction to flatten, or rub them on the board and let them sit.
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