## Common Core State Standards for Mathematics

Grade(s) 6 resources related to the following standard:
Ratios and Proportional Relationships
Understand ratio concepts and use ratio reasoning to solve problems.
3. Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.
c. Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.

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Rating
This interactive applet helps students estimate percents of a unit length using the familiar context of a computer download ribbon. On Start a red bar begins to move across the download bar. The user clicks Stop to approximate the given target percent and is given feedback. After practice with some common benchmarks, users choose their own download targets.
Activity, Interactive Media
This interactive applet for two players helps develop estimation skills. As in the game Connect Four, each player tries to connect four game pieces in a row (horizontally, vertically, or diagonally) before the opponent does. Players earn game pieces by estimating the answers to displayed problems according to the user-set tolerance for accuracy. Users may choose the type of problems (addition, multiplication, and/or percentage) and the difficulty level. The game may be played with no time limit, or with a limit set by the users.
Activity, Game, Interactive Media
Grade Level: 3, 4, 5, 6+
This searchable data bank includes nutritional information on fast food items in the form of Nutrition Facts labels required by law. The user can search for a restaurant chain, food category, an individual menu item, and sort by criteria such as calories, fat, sodium, fiber, etc. The Fast Food Facts Book is available for purchase.
Data Sets
This Mother's Day themed set of word problems provides students with practice problem solving using ratios, algebraic thinking, operations with whole numbers, decimals, and percents, and more. The resource includes an answer key.
Assessment, Problem Set
This problem provides an opportunity for students to reason about ratio and proportion in the realistic context of mixing a fruit drink from concentrate. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and links to related problems (Blackcurrantiest is cataloged separately).
Activity
Students can use this calculating applet to explore the relation between fractions, decimals, ratios, and percentages. When students enter any two out of the three numbers representing a fraction or percent (part, whole, percent), the applet calculates the third, shows pie chart and bar chart representations of the amount, and provides an equation showing the calculation. Applet instructions and teaching ideas are included in the links at the top of the page.
Activity