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- Grade Range
- 4th - 7th
- Rating
Students access web site and record various population statistics pertaining to a county in the USA of their choice. They use this data to set up and solve ratios. They compare data to make meaning of the numbers. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students measure the rate of diffusion and to calculate the surface area to volume ratios of varying cell sizes. The lesson is very clearly organized with a useful student worksheet provided. They perform a lab experiment which is clearly outlined. Full Review »
- Grade Range
- 7th - 8th
- Rating
Students determine the probability of a given event and express the results as a ratio, decimal, percent, and construct graphs to compare, predict, and infer information. They use Skittles to add interest to this lesson. Full Review »
- Grade Range
- 2nd
- Rating
Students use knowledge of measurements and ratios to mix various combinations of liquid starch and glue. They chart their ratios, make observations, and write a summary of the activity. They mix their own batch of Crazy Putty to take home. Full Review »
- Grade Range
- 4th - 6th
- Rating
Students measure the actual size and distance of the solar system using scale and ratio. They watch and discuss a video, create a distance-scale solar system model, and compare the scale sizes of planets to their actual sizes. Full Review »
- Grade Range
- 6th - 7th
- Rating
Students examine mathematical ratios and compare deaths due to the Vietnam War and those due to family violence. They discuss ratios and violence in their community, and complete the worksheet "Deaths Due to Violence." Full Review »
- Grade Range
- 7th
- Rating
Students use digital cameras to take pictures to find heights using ratio and proportion. Students use this information to transfer knowledge of ratio and proportion to the real-life skill of finding the height of an object. Full Review »
- Grade Range
- 5th
- Rating
Students study fractions as ratios. They review what a ratio is and how to write them as fractions. They examine poultry-related illustrations to visually represent the problems. They write ratios of groups of real objects and complete worksheets. Full Review »
- Grade Range
- 6th - 8th
- Rating
Students review the concepts of ratios and proportions. Using the internet, they examine the directions from Los Angeles to Washington D.C. They identify the scale to which the map is laid out and discuss what would happen if the scale changed throughout the length of the map. Full Review »
- Grade Range
- 7th - 8th
- Rating
Students set up ratios and proportions, solving for unknown values. They define ratio and proportion. Students determine if two ratios are proportional to each other. They solve proportions that are already set up. Students set up proportions and solve from a word problem. Full Review »
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