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 The free Brick Math Lesson of the Month for November 2025 covers a topic that many students find difficult to understand -- working with fractions that have different denominators. This lesson is taken from Brick Math Basic Fractions. To get this lesson, click here, and you'll also get a new free Brick Math lesson every month after that.  After students have learned to add and subtract fractions that have the same denominators (for example, 3/8 + 2/8), it's time for them to learn how to add two fractions that have different, or unlike, denominators. In this lesson, students model the addition of 1/4 + 2/3. Before they can add the numerators, they must learn to find the Least Common Denominator to make the denominators the same. This lesson uses a wonderful technique called the "fraction train" to show clearly how to find the Least Common Denominator.  Using the studs on the bricks, students learn that the Least Common Denominator for this problem is 12. They model the two fractions with that denominator, then add the numerators. Along the way, students answer questions and explain in words why the math works. The Brick Math methods help students develop a deep understanding of math. The lesson starts with the Teacher lesson plans for the first four pages, followed by the three corresponding pages in the Student workbook. Try this lesson of the month with your students to see the power of Brick Math in action!  The Brick Math curriculum is divided into 13 separate content areas: Counting, Addition, Subtraction, Multiplication, Division, Basic Fractions, Basic Measurement, Fraction Multiplication, Fraction Division, Advanced Measurement and Geometry, Decimals, Data and Statistics, and Pre-Algebra. Students can start anywhere in the curriculum. Brick Math can be used as a complete math curriculum or brought in as a supplement to help students who aren't having math success with other programs. Check BrickMath.com to learn more!
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