Find how many, how many more, how many less, or how many in all by reading bar and picture graphs with up to three categories. Students can practice here.
Reading bar graphs: dog bones by Khan Academy
Solve problems with bar graphs 1 by Khan Academy
Conclude by leading this investigation:
Hex (strategy game)
1.MD.C.4: Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.