Math Everywhere: Division

While preparing for our first family trip involving an airplane, we got to do a little hands-on math.  Our kids' pediatrician suggested we bring gummy bears along for the flight to help avoid painful ear pressure during take-offs and landings.  We bought a big bag and divided them up into four groups -- two for … Continue reading Math Everywhere: Division

Early Math Activity: Making Groups of Ten

Here's a quick and fun activity to introduce pairs that add to ten -- important math facts to memorize early!  We used our Unifix cubes, but Duplos, Legos, or any other connecting blocks would work as well. I made stacks of cubes for each of the numbers 1 through 9, including two stacks of 5, … Continue reading Early Math Activity: Making Groups of Ten

Tessellation Tip

In order to keep them from crawling up the walls in their last week before summer vacation, I've given my seventh graders a tessellation project.  There are about ten million youtube videos explaining how to do this, so I won't bore you with the basics.  Instead, I'll just tell you about my struggles and how … Continue reading Tessellation Tip

Units vs. Square Units (vs. Cubic Units)

When teaching basic geometry concepts, such as perimeter and area, you will save yourself quite a bit of grief if you start by making clear the difference between units and square units. Our common abbreviations for these, such as cm and cm², look deceivingly similar to each other and are easily confused by students who … Continue reading Units vs. Square Units (vs. Cubic Units)