This is a PowerPoint which will help your students learn about United States currency, and will also let them practice counting it. It's a great tool to present, then give out a worksheet or some play money for them to work with afterward. It can be used over and over as a reference, and one slide in particular shows the fronts and backs of all coins along with their values, and can be left on the screen or printed out for their reference.
Although the standard is only in Common Core in 2nd g