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Math Games With Adding & Subtracting Rational Expressions

A rational expression is the same as a fraction, but with variables. Basically, a rational expression is a fraction with a ratio of two polynomials. This means that to add and subtract rational expressions, students are first required to convert to common denominators. These skills are crucial to develop in school and can be simple to learn.
  1. Board Game

    • This is a fun way to practice adding and subtracting fractions. The board is easy to make using construction paper and cardboard. The board game should consist of the board, dice, playing pieces and cards with rational expressions' problems. Each student should be allocated a playing piece. The board should consist of a number of spaces before the finishing space. Every five spaces, students will be asked to pick a card. The card will present the student with a particular fraction problem with an uncommon denominator. For every correct solution, students will be granted another turn. For every wrong solution, pieces should be moved back to the previous space.

    Fraction Pressure

    • In this game the class should be presented with an equation containing rational expressions. Students should see fit to either add or subtract fractions to produce a suitable answer. Provide the students with a list of four possible answers and challenge them to choose the correct one collectively. A right answer will earn the group a point, but a wrong answer will lose them one. Keep track of the class score and see what they are capable of reaching with a total of 10 questions.

    Time Challenge

    • Students should be provided with a list of equations. Ask students to convert to common denominators by adding and subtracting. Challenge each student to race against the clock and come up with as many correct answers as possible in an allocated 60 seconds. Collect all answers after the minute is up and assess each in terms of quantity and correctness. The student with the most correct answers wins the game.

    Class Quiz

    • Get your students into groups of three to four. Provide each group with a piece of blank paper. Announce that they are taking part in a quiz. Every round should involve a problem involving converting the denominators of rational expressions into common denominators by adding and subtracting. The quiz should consist of 10 rounds. The group with the most appropriate solutions is rewarded.

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