gr8_ratio+and+rate

=Ratio and Rate=

//It is expected that students will://
 * **Prescribed Learning Outcomes**

A4 Demonstrate an understanding of ratio and rate. [ C, CN, V]

A5 Solve problems that involve rates, ratios, and proportional reasoning. [ C, CN, PS, R] || Have students explain how fractions and ratios are alike and different, giving specific examples. Have them include the concept of equivalency in their work. This comparison, apart from the examples, might also be made using a Venn diagram.
 * **Planning for Assessment** || **Assessment Strategies** ||
 * Writing to learn:

Have students explain how rates and ratios are alike and different, giving specific examples. This comparison, apart from the examples, might also be made using a Venn diagram.

You may have students compare fractions, ratios, and rates on a single Venn diagram with three circles. || Students should include important points in their writing such as these:
 * fractions are always based on a part-to-whole comparison
 * ratios may either be part-to-part or part-to-whole
 * ratios may be written to compare two or more terms where fractions are limited to two terms
 * equivalent forms of both fractions and ratios can be created by multiplying or dividing each part of the fraction or ratio by the same factor.
 * equivalent forms of both fractions and ratios can be created by multiplying or dividing in the parts in multiple steps (e.g., an equivalent fraction or ratio to 3/6 that has a denominator of 14 may be found first be dividing each part by 2, then multiplying each part by 7).
 * using fractions always indicates the amount of the whole; using ratios only specific parts may be mentioned but the whole may not be known as other parts may be involved not mentioned in that ratio.
 * rates are a comparison of two amounts measured in different units. ||
 * || {describe the assessment task, the method of gathering assessment information, and the assessment criteria as defined by the learning outcomes and achievement indicators.} ||