Since many teachers in my schools use Promethean boards, I was interested to see if there were any hundreds charts available for them to use with math instruction. (I noticed Promethean offered an interactive hundreds chart from Promethean Planet for $7.50. I wanted a free alternative.) I found this site below:
I really enjoy this one. Even if you do not have an interactive whiteboard, you can still project it from your computer and use it with your class. The site will allow you to add 3 different types of counters: circles, squares, and triangles. Drag them onto the chart to show multiples or practice counting.
Ambleside Scribble Table
The scribble table is multiplication chart from the same place, Ambleside Primary School. Instead of chips, use your mouse (or pen on the Promethean board) to "scribble" on the chart to make your annotations. This is a nice tool for quick multiplication or division practice.
Houghton Mifflin Hundreds Chart
The Houghton Mifflin Hundreds Chart is another option for classroom teachers. By clicking the paint can on the top left side, you can choose 4 colors to add to your numbers: red, yellow, green or blue. Now you can color code the numbers by multiples to help children see patterns. Click the empty can to erase color from a number, and finally click the broom to completely clear the board to start again. Even without a Promethean board, this can be an effective teaching tool when projected and used during math instruction.
Ambleside Primary has done it again! In addition to their hundreds chart and their multiplication chart, they also have an interactive number line. The number line comes with 7 colored squares that you can use to cover the numbers so that students have to calculate what number is missing. This would be great on a Promethean board, too! Notice at the bottom of the site, there are blue buttons with options for different types of number lines: 1's, 10's, 100's, 0.1's, 0.5's, -5 through 5, or create your own under the section entitled "Make a line". Just specify the number you want the line to begin at and the increments to count up by and click "Go". You end up with your own personalized line! If it the site allowed you to display more than 11 numbers at a time, it would be even better.
The Math Worksheet Site has a number line generator, but instead of it being a digital, interactive image, it creates a worksheet that you can print out. The site does not limit the values you can put into the number line, so some number lines may print out very small. This is a nice option for teachers to know about who use number lines to teach basic math. If you have a Promethean board, you can generate the number line, and then use "Annotate Desktop" to write over the number line at the board.
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