Math lesson plan for adding using manipulative to decompose larger numbers.Prior to lesson1) exit slips must be printed and cut2) connecting cubes or other manipulative to show 10's out for students to use (10 stick, bundle of Popsicle sticks, etc.) CCSS.MATH.CONTENT.2.NBT.B.7: Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written met