CIESEmath Activity: Integer Addition using Color Chips
Alligned with Unit 6 Lesson 3 of Everyday Math

Go to http://nlvm.usu.edu/en/nav/frames_asid_161_g_2_t_1.html?open=activities&id=74

Your screen should look something like this:


Drag into the workspace (the oval space) the number of positive and negative chips that correspond to the addends in the number sentence. In the example above, you have 1 and -5 in the number sentence, you need to drag one positive (black) chip and five negative (red) chips into the workspace so it looks like this:


Next, drag a red negative chip on top of the black positive chip. What happens? (The red and black chips should disappear.)

Press the continue button. You should see something similar to this:



Since there are four red negative chips, you should type -4 in the empty box. Then click the check button. If you did that correctly you will be prompted to press the new problem button.

Do 5 more problems and record your results in the table below.

Problem Posed
Show Chips in Workspace
Show workspace after the disappearing acts are complete
Result
(-5) + 1
-4












State a generalization or rule that reflects what happens when you combine a positive and negative values.



Use your rule to do the  following problems.

  8 + (-5) =

 (-6) + 5 =

(-11) +  (- 5) =













































http://nlvm.usu.edu/en/applets/doc/colorchips/signedaddition/a_colorchipsadd4-8.html