Test your students' knowledge on history by asking them what Thomas Edison invented. If they get the right answer, provide more information on other inventors. Check out this printout of Edison's light bulb inventions laid out in arrays. Get them to match each array to the correct multiplication fact.
Dividing is simply grouping items into equal sets. This worksheet helps kids see division problems in array form. They'll match each equation with a picture group, using the lines provided. It's a great way for beginners to understand division more concretely.