Making rectangular arrays with tiles is a great visual way to have students understand multiplication as repeated addition. And since we’re making arrays anyway, why not tie in square numbers. A square number is: 1) A number that can be expressed as the product of the same two numbers. 2) The product of a number multiplied by itself. When making rectangluar arrays, square nuumbers (1, 4, 9, 16…) always make a square. Besides, there are some very neat patterns that…
Super simple, and super fun. Great way to introduce bilateral/mirror symmetry. I usually do this with fourth graders but I think third graders could probably do it, too. CCSS: 4.G.3
Here’s a quick video that shows ways to hang your Nifty Numbers or Math Medley Family Math Night banners if your surface doesn’t accept push pins or string. .
If you look close enough you’ll find yourself surrounded by multiplication arrays. An array is made up of horizontal rows and vertical columns. It’s a great, visual way to show multiplication as repeated addition or divisions as equal shares. For example, the top array shows two rows and three columns. The equations that represent this array are: 3 + 3; 3 x 2; 6/3. In a multiplication equation, we always say rows first, then columns. If you want to tie…
Here’s a fun game I’ve played with kindergatners and first graders. It’s a twist on the Memory game where two cards are turned over and, if it’s a match, the cards go to that player. The one at the end with most cards is the winner. There are two ways I’ve played it. The first way is to have students match the total number of dots of both cards. The second way is to have students match a numeral card…