This method allows your students to use a Tic Tac Toe board to factor trinomials with integer coefficients. This factoring method is an alternative method to the traditional grouping method. Students will be able to use this method to solve quadratic equations in one variable.
You can use this method after teaching students how to factor trinomials using grouping or you can use this method to replace the traditional method.
It is an efficient method that helps to eliminate guess-and-check errors. It is not a trick - it's another way to organize your students' thought process! AND, it can be a time-saver!
I have successfully used this method for 15 years!
1. Detailed Lesson Plan (.pdf)
2. Student Worksheet with Answer Key (.pdf)
3. Follow Along Worksheet (.pdf)
4. Slideshow with a step-by-step explanation of the method (.ppsx)
5. Copy of slideshow (.pdf)
Common Core State Standards adddressed by this product:
Standards for Mathematical Content
A.REI.4: Solve quadratic equations in one variable.
A.SSSE.2: Use the structure of an expression to identify ways to rewrite it.
A.SSSE.3: Choose and produce an equivalent form of an expression to reveal and explain properties of the quantities represented by the expression.
Standards for Mathematical Practice
MP.2: Reason abstractly and quantitatively.
MP.7: Look for and make use of structure.
Created by Tammy Mo's Math.