Human Place Value - love the ball as the decimal point. Try using this idea with converting in metric system. Have students wear numbers and another student moving decimal point.

Finally a better use for those old clothespins that can no longer hang student work from our classroom ceilings! Use them for comparing and ordering fractions, decimals, and percents, as well as place value

Convert Fractions to Decimals, Percents: Pinning for my kids.I wish a teacher had used something like this when I was in elementary school. Fractions, decimals and percents would have made SO much more sense to me!