Unit 11 Overview:

Students are introduced to the concepts of addition and subtraction by using a variety of representations such as drawings, sounds, acting out situations, verbal explanations and numerical expressions. It is essential to provide contextual situations for addition and subtraction that relate to the everyday lives of kindergarteners so they can easily tell story problems. A variety of situations can be found in children’s literature books, helping parents and teachers choose stories from the add to, put together, take from, and take apart story problem situations. Manipulatives, like two-color counters, clothespins on hangers, connecting cubes and stickers can also be used for acting out and representing these operations. Students will also need to be able to fluently (quickly and with accuracy) solve addition and subtraction problems within 5, without the need for manipulatives, drawings, strategies, etc.

• Students will solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. (K.OA.A.2)
• Students will decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5= 2 + 3 and 5= 4 + 1) (K.OA.A.3)
• Students will find a number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation. (K.OA.A.4)
• Students will develop fluency by applying strategies to add and subtract within 5 (K.OA.A.5)