Virtual Hundreds Chart
We know that Hundreds Charts are one of the essential tools in early math instruction--counting, sequencing, fractions, decimals, percents, basic manipulative use, the Sieve of Eratosthenes!
Save some time and use this Microsoft Word version of a Hundreds Chart: print it, laminate it, project it, whatever you can think of! Click on this link to download the chart: Download file
Here's an example of virtual highlighting:

Idea: To find least common multiple of 8 and 6, highlight the multiples of 6 in yellow--when you hit one that should be both blue AND yellow, make it green! That's a common multiple!
You might want to pre-highlight one (8s or 6s) and have students do the other. Other ideas?