# Archive for November 8th, 2010

## Using Two Sided Counters for Guided Math Lessons

Two sided Counters! Everybody needs them. They are so great.  You can use them to model all the operations.  They are officially called Double Sided Math counters. They usually come as red on one side and either white or yellow on the other.  You can also just make them by spray painting lima beans. You can also print out paper ones http://www.teachervision.fen.com/teaching-methods/printable/44640.html?detoured=1

5 Frames -Use them with 5 frames. Teach them in small groups with the actual frame and then move to the internet games.  In the games on this site, you work on different strategies, such as counting, missing addend and adding with 5 as a landmark number. http://illuminations.nctm.org/activitydetail.aspx?id=74

10 Frames – Use them with 10 frames. Teach them in small groups with the actual frame and then move to the internet games.  In the  games on this site, you work on different strategies, such as counting, missing addend and adding with 10 as a landmark number.  You also work on teaching the visual representation of using lucky 8 and lucky 9 otherwise known as compensation.  Ten frames allow students to see what they are doing.  http://illuminations.nctm.org/activitydetail.aspx?id=75

Addition -Students can use these counters to practice addition problems.  Each color is a different addend.  They model with the manipulatives.  I also set up problems where they have to take an equation and build the model.

Equivalent Names – Students toss the beans and then color in the amounts on this Math Their Way bean template… http://www.center.edu/BLACKLINES/001-061/033-039.pdf.  There are templates for equivalent names from 4-10.  I have the students make equivalent name books.  I also have the students to match different pictures with different equations.  I also have them to use the mats to build the different equations.

Comparing– Students toss the counters and then compare the amounts of each color.

Patterning – Use the counters to make different patterns…abc, abab, abcd, ababbabbb, abc

Fractions– Have students toss the counters and then write the fractional part of each color.  http://www.math-lesson-plans.com/support-files/day8fractionswithtwocolorcounters.pdf

Probability – Give the students one double-sided counter and have them flip the counter 10 times and record the colors.  They discuss how many times it lands on each color and discuss the probability of each color coming up.

http://www.eduplace.com/cgi-bin/schtemplate.cgi?template=/kids/mw/manip/mn_popup.thtml&filename=2cc&title=Two-Color%20Counters&grade=3

Two color counters come in plastic, in foam, as magnets, in circles, and in bean shapes.

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