Fractions with Visual Models

Added on 9/30/2008

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Students will enter fractions and multiply. To do this, they need to follow the directions on the worksheet, entering the numerator, the fraction key, the denominator, the multiplication operation, then the second fraction. no alt text supplied
To enter a mixed number, student will use the "Unit" key. no alt text supplied
Many students have difficulty understanding what is being done when dividing by a fraction. It can be explained as finding how many “divisors” are in the “dividend”. Using the fraction tiles and TI-73 Explorer should help students visualize this concept. no alt text supplied
Dividing a fraction by a fraction adds a little complexity but students should be familiar enough with the  key to perform this calculation. no alt text supplied
Students will likely be familiar with the key presses for multiplying and dividing on the home screen. Emphasis in this section that students should estimate the answer prior to performing the calculation as it is very easy to miss the decimal point or put it in the wrong location. no alt text supplied
This exercise should be done without the calculator. Students should be able to place the decimal point by estimating the solution. After students have completed the exercises, an overhead projection calculator could be used to show the solutions. no alt text supplied
Students can solve a similarity problem by finding the proportional relationship between height and shadow length. no alt text supplied

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