Unit 3 Overview:

Unit 3 focuses on sorting and classifying objects into given categories (with up to 10 objects in each group). The context of classifying objects supports the continued development of counting skills. Students use counting skills within 10 to represent quantities of objects in the various categories. Students will continue to work on recognizing and writing numbers. Students will also develop the understanding of cardinality as they see that the last number said, represents the total quantity for a set. In addition, students will be given the opportunity to quickly recognize the quantities of objects without having to count the objects. This is called subitizing. This early work in subitizing, begins to prepare a foundation for combining subsets later on in the year.

• Students will understand that when one more is added to a number set (0-10), this new number includes all the previous objects in the set, plus the new one. (K.CC.B.4c)
• Students will be able to match and count two sets of objects 0-10 and use math vocabulary (greater/more than, fewer/less than, equal to/is the same as) to compare them. (K.CC.C.6 & K.CC.C.7)
• Students will classify objects into given categories; count the numbers of objects in each category and sort the categories by count. (K.MD.B.3)