Introduction to lesson:
This lesson will introduce your students to fact families for subtraction. Fact families began to appear in U.S. education in the 90’s and all we usually taught was how to rewrite a problem in different ways and not how to use them. Teachers, students, and parents all wonder why we teach this. Where did the idea of fact families come from? Many European countries use fact families to solve equations instead of the traditional balance the equation strategy used in the U.S. Understanding fact families, using fact families to solve problems, and allowing your students to complete work mentally will make them stronger in math. This will give you another way to have your students practice their basic addition and subtraction facts, develop abstract thinking, and prepare them for problem solving in the future. Students will learn for themselves that a letter may be used to represent an unknown value and develop abstract thinking without you mentioning the words Algebra or variables.
Materials included in this lesson:
1. A PowerPoint lesson containing 18 slides and 3 different activities to keep students involved in the lesson while they learn what fact families for subtraction are and how they may be used. This will give you freedom to walk around the classroom to observe student understanding while presenting the lesson. Be sure to run through the PowerPoint several times before using it in the classroom so you understand what is coming next with each click.
2. An activities worksheet to go along with each section of the PowerPoint. This will meet the needs of the kinesthetic learners, allow you to observe student participation in the lesson, and give students a reference for when they complete their homework.
3. A homework assignment geared to help students master the concept, not be overwhelmed with a large number of problems or copying each problem before applying the concept.
4. A note to parents to help them understand the reasons behind the lesson, what the lesson is on, and the expectations of the student. Remember, keeping the parents on board is crucial to enhancing the students’ learning experience.