Students use sticky dots to create a caterpillar with a head and 10 body parts. They add eyes, a mouth, and antennae to the head. Then they add two legs to each body part. Finally, they skip count by 2s and write in the number. For the younger ones, I provide a 0-110 number chart for them to use as they write in the numbers. . . . Oops…I didn’t catch this one in time. Her caterpillar is skip counting…
Crossword puzzles are symmetrical?! That’s usually the response I get after students have been given a chance to look through blank crossword puzzles I’ve cut from the paper. Then I show them how all crosswords are designed with 180-degree rotational symmetry. Starting with 90-degree rotational symmetry, we rotate an object 1/4 the way around the circle. See photo below. Then we rotate an additional 90 degrees so that we end up with a turn of 180-degrees. (We’ve done work in…
There’s no better excuse to have kids counting all day than the 100th day of school. Often, teachers have students bring in 100 of something that they sort into groups of 10 (you can also have each student bring in 10 of something and then combine them to make 100). Or maybe it’s a project made with 100 of something. Or making tally marks and skip counting by fives to 100. Whatever you choose, it’s the perfect way to celebrate…
This is one of my favorite math and art activities. That’s because it involves a mathematical pattern. Using centimeter graph paper, we start with the basic unit which, in this case, is simply one square. I then ask students what they think the area would be if we doubled the size of the square. The first thing they blurt out before thinking is “two”. I then use the graph paper to show them that if I double the square (double…
Kids love geometry. It’s so hands-on. At least, it should be. I can’t imagine trying to teach kids geometry without letting them draw, cut, design, build. 3-D geometry taught on paper? I don’t think so! Unless, of course, you’re designing nets. And that’s exactly what I did with a group of sixth graders. We were working on volume and I thought it would be fun to re-design the soda can. It required a lot of hands-on work that involved graph…