This lesson unit is intended to help assess how well students are able to interpret and use scale drawings to plan a garden layout. This involves using proportional reasoning and metric units.

This lesson unit is intended to help you assess how well students are able to: solve simple problems involving ratio and direct proportion; choose an appropriate sampling method; and collect discrete data and record them using a frequency table.

This resource combines several OER resources in a way to help build deeper understanding. Students start with exploring what they already know about ratios and proportions. Next they review (or learn for the first time, depending on background) with Khan Academy some videos on the topics. They are able to do some hands on exploring with sorting ratio cards by digging into relationships. Students can then work on a three act math problem, and dig into the entire process of writing and solving a proportion problem. They end by evaluating "student work" on the topic, explaining the steps and what went wrong in the problems.

Many math classes have students with varying backgrounds and levels of understanding. These activities have multiple entry points, giving more opportunities for learning. This is designed to give students the opportunities to dig in deeply to build conceptual understanding as well as procedural fluency.

Four Representations of Constant of Proportionality help students use their knowledge of proportional relationships. Students identify the constant of proportionality from a word problem, an equation, a table, or a graph; and then use that knowledge to complete the other tasks.

This lesson unit is intended to help teachers assess how well students are able to interpret percent increase and decrease, and in particular, to identify and help students who have the following difficulties: translating between percents, decimals, and fractions; representing percent increase and decrease as multiplication; and recognizing the relationship between increases and decreases.

This lesson unit is intended to help sixth grade teachers assess how well students are able to: Analyze a realistic situation mathematically; construct sight lines to decide which areas of a room are visible or hidden from a camera; find and compare areas of triangles and quadrilaterals; and calculate and compare percentages and/or fractions of areas.

During this activity students will learn how to estimate population size using two techniques, density extrapolation and the mark-recapture method.

Learn about the dynamic relationships between a jet engine's heat loss, surface area, and volume in this video adapted from Annenberg Learner's Learning Math: Patterns, Functions, and Algebra.

This lesson unit is intended to help teachers assess whether students are able to: identify when two quantities vary in direct proportion to each other; distinguish between direct proportion and other functional relationships; and solve proportionality problems using efficient methods.

In this lesson designed to enhance literacy skills, students learn how to use fractions to interpret the nutritional information contained on food labels.

This lesson unit is intended to help teachers assess how well students are able to: translate between decimal and fraction notation, particularly when the decimals are repeating; create and solve simple linear equations to find the fractional equivalent of a repeating decimal; and understand the effect of multiplying a decimal by a power of 10.

This task provides a context for indentifying different ways of representing half of a rectangle.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values. Arabic Language.

This lesson unit is intended to help teachers assess how well students are able to solve a real-world modeling problem. There are several correct approaches to the problem, including some that involve proportional relationships.

In this lesson designed to enhance literacy skills, students examine how to use fractions to measure and help conserve freshwater resources.

This course introduces students to the types of writing they will encounter in business, industry, the academic world and government. It examines the rhetorical nature of writing and asks students to think critically about content, audience, argument and structure. Students will learn how to effectively design documents, present instructions, create proposals and produce technical reports.

Course Outcomes:
1. Analyze the rhetorical needs (the needs of the audience in relationship to the assignment) for college-level evidence-based technical writing assignments.
2. Apply appropriate levels of critical thinking strategies (knowledge, comprehension, application, analysis, synthesis, evaluation) in their written assignments, with an emphasis on technical, evidence-based analysis, reporting, application, and evaluation.
3. Implement appropriate rhetorical elements and organization (executive summary, introduction, thesis, development and research-based support, visual evidence, conclusion, etc.) in their written assignments, with an emphasis on technical evidence-based analysis, reporting, and evaluation assignments.
4. Locate, evaluate, and integrate high-quality information and opinion appropriate for technical evidence-based assignments.
5. Craft sentences and paragraphs that communicate their ideas clearly and effectively using words, sentence patterns, and writing conventions at a high college level to make their writing clear, credible, and precise.

In this task students see different ways of partitioning a circle and a rectangle into two or more equal shares.

This collection of activities explores the relationship between blood flow, pressure, and the factors of resistance through graphs and modeling direct and inverse variation.