I don't know why, but my students have always gone nuts over class picture day. It's such a big deal to them! When we take our class pictures, we have to line our students up from tallest to shortest, and I thought that it would be fun to give students some real-life measurement practice. A day or so before picture day, I had everyone use a yard stick or growth chart to measure their height in inches. They recorded their heights and turned them in. Then, the night before picture day I made an index card for each student that gave their height. Here's the trick. I'd wrote some heights in all inches, some with inches and feet, and some with yards, inches, and feet. On picture day, I gave each student their index card and told students to use their measurements to order the cards from the smallest to tallest height. It was so neat to see students out of their seats and actively converting measurements with each other. It wasn't until the activity was over that my students realized what I was using the index cards for. We later used the measurements to create a line plot of the class's height.
I'll leave you with a blast from the past! My own second grade class picture...bless my heart.
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