Missing chickens -- Time to subtract -- How many left? -- Solve a pig problem -- Subtract with zero -- How many more? -- Subtract the crows -- Help from number blocks -- Practice, practice!.
Summary:
"Friends share their strategies for figuring out how many objects remain as some are taken away."-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.