 @internet4classr I4C

## Apply scale factor to solve problems involving area and volume. SPI 0706.4.3

1. Area of an Irregular Rectangle - calculate the area of each figure given 2. Areas and Squares - a five question multiple-choice quiz 3. Artie Ounces Soda Jerk - interactive game to practice converting ounces to pints and quarts or 4. Calculating Areas - a five question multiple-choice quiz 5. Calculate the Area of the Rectangle - from FunBrain 6. Calculating the Area of a Triangle - from AAA Math
7. Dilation - the description of a dilation includes the scale factor and the center of the dilation
8. Dilation - definition with a good drawing to illustrate dilation from Wolfram MathWorld
9. Dilation of a Polygon - adjust the slider to change the scale factor 10. How to Perform Dilations - Math Warehouse provides three clickable animations explaining dilation
11. Intuitive Notion of Dilation - definition and several good illustrations to explain the concept of dilation
12. Linking Length, Perimeter, Area, and Volume - NCTM lesson plan comparing the perimeter and area ratios of similar rectangles with various scale factors
13. Playing with Dilations - an interactive applet from the National Library of Virtual Manipulatives 14. Re-roofing Your Uncle's House - [area] Use a built-in tape measure and calculator to calculate the roofing material needed to finish the job. [area of trapezoids involved] 15. Scaling Away - Students will measure the dimensions of a common object, multiply each dimension by a scale factor, and examine a model using the multiplied dimensions. 16. Solving Proportions - This lesson presents solving proportions by using cross product to find unknown terms
17. Scale Drawings - [follow up for Solving Proportions] After you understand proportions, try the lesson on making scale drawings
18. Spy Guys Interactive - Relating Area and Perimeter - Video Lesson 19. Spy Guys Interactive - Surface Area - Video Lesson 20. Spy Guys Interactive - Volume and Displacement - Video Lesson 21. Understanding Scale Factors - Similar Triangles: Perimeters and Areas - When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles
22. Using Spreadsheets to Find Area and Perimeter - The cells of a spreadsheet are a useful way to represent area and perimeter.  Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 