This is a clear way of showing numbers as tens and units. Children have to choose which number is being shown in each picture. Aligned with Common Core Standard: K.CC.1 Counting and Cardinality: Know number names and the count sequence. Aligned with Common Core Standard: K.CC.5 Counting and Cardinality: Count to tell the number of objects. Aligned with Common Core Standard: 1.NBT.2 Numbers and Operations in Base Ten: Understand place value.