For our exploration I used large, flat marbles from the dollar store and wrote lower case letters onto 26 of them using a black permanent marker. On a piece of tracing paper I traced one marble 26 times and wrote a different capital letter into each one, also using the black marker. I did not write the letters in order on the paper, so that Big Brother would need to look for each capital letter. However, for the first exploration I did set up the lower case letter marbles in order to make the matching process a little more clear. (You may notice there are actually 27 circles/ marbles with a star spot added as well.)
Big Brother was instantly intrigued before I could even finish setting up, and knew right away he needed to match the letters. He's been really interested in understanding the difference between capital letters and lowercase letters, so combined with the light table this quickly became a high interest activity.
As I often do, I gauge a project's success by how long it can engage Big Brother. In this case he spent over half an hour matching the letters and then starting over.
We'll be looking for other ways to add to our list of light table ideas. If you use a light table with kids do you have a favorite activity you like to use it for?
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