Math Manipulative Ideas

Math manipulatives are items that students can physically handle in order to better understand mathematical concepts. These items include objects that can be counted, grouped, sorted or otherwise manipulated in some way. The tactile stimulation that math manipulatives provide is a way to engage learners in a hands-on exercise. The following activities deal with addition, multiplication and probability and are gauged toward elementary school students.

Egg Carton Math

Write the numbers one through twelve in the bottom slots of some empty egg cartons. Place a marble or other small object into each carton. Divide students into groups of two to three children, and provide an egg carton to each group. Instruct the students to shake the closed egg carton and then open it. Once they open the carton, have them write down the number upon which the marble is resting. Have the students close the carton, shake it again, and open it once more. Have the students should write down this number as well and multiply it with the other number. Instruct them to write down both numbers along with the product in a multiplication sentence ("2 x 3 = 6"). Allow the children to take turns shaking the carton and composing the addition sentences.

Topping Addition

Give each student a frosted cupcake and a die. Place small bowls of toppings on the desks or tables. These toppings could include small items like gummy candies, M&Ms or candy corns. Have them take out a piece of paper and a pencil. Instruct the students to roll the die and write down the number that comes up. Have them place that number of toppings onto their cupcakes. Instruct the children to roll the die once more and repeat this process. Once the toppings have been added, have the students use the two numbers in an addition sentence ("4 + 3 = 7").

Twister Probability

Display a large spinner from the game Twister at the front of the classroom. Have the students write down the names of each color represented (red, yellow, blue and green). Explain that probability is the mathematical measurement of how likely something is to happen. Tell the students that you will spin the spinner 24 times. Instruct them to write down a numerical prediction beside each color on their papers of how many times the spinner will land on that color. Remind them that mathematical probability says that each color has a 25 percent chance of occurring in the activity; therefore, ideally speaking, each color would be represented six times. Spin the spinner 24 times and have students record the actual results. Discuss how probability usually isn't 100 percent predictable, as indicated by differences between the predictions and the results.

References

• Rosenberg, Wendy. (November 20, 2000.) "Decorate-a-Cookie." Retrieved August 9, 2009, from the Education World website.
• "Break My Eggs." Retrieved August 9, 2009, from the Multiplication website.
• "Adjustable Spinner." Retrieved August 9, 2009, from the Illuminations website.

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