Frozen popsicle chalk is easy to make and a great way for kids to get creative when weather is hot. Recipe: This time I used half cornstarch, half water, and washable tempura paint instead of food coloring.
This is a sorting activity made to go along with Chapter 1 of the grade Math in Focus series. Students practice identifying numbers in standard, word, and expanded form. They will sort them and match them up on a piece of construction paper.
Here's a nice post on using place value cards to help students understand decomposing numbers and expanded form. Includes a link to a set of place value cards. Could change colors to go with Math-U-See.