1. In this first set of Lesson Plans for Standard 4.NF.B.3.B, students explore the associative and commutative properties of addition by breaking mixed numbers apart and then adding the parts separately. The commutative and associative properties state that it does not matter how the numbers are grouped or in what order they are added, the sum (answer) will always be the same.
2. Students also add mixed numbers by using improper fractions.
3. Students will model both types of solutions using number lines that are provided.
4. Students will practice addition skills learned in the earlier grades such as "counting up by tens" and using incremental addition along a number line.
5. Using a number line, students will break improper fractions into a sum of smaller fractions as a method of finding the equivalent mixed number. (Fourth Grade Standard 4.NF.B.3.B).
6. These Lesson Plans include templates to allow teachers to modify and create additional practice problems for students.