Illustrative Mathematics
Illustrative Mathematics: 8.ee Peaches and Plums
In this task, 8th graders are shown graphs of two linear functions and are asked to compare the costs per pound of two fruits without knowing their actual prices. To do this, they need to think about slope and unit rates. Aligns with...
Khan Academy
Khan Academy: Units
In this exercise, students solve word problems that involve using different units. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
PBS
Pbs: The Lowdown: Exploring Changing Obesity Rates Through Ratios and Graphs
In these KQED Lowdown infographics, explore how adult obesity rates in the United States, as measured by body mass index (BMI), have dramatically changed in the past half-century. A circular graph and a pictograph depict data by decade,...
Khan Academy
Khan Academy: Comparing Rates
Example problem: Three different stores are offering a deal on pencils. Which store has the lowest price per pencil? Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Texas Instruments
Texas Instruments: Smart Shoppers
In this activity, students will compare ratios with different denominators, and then with common denominators. They will also find unit rates.
Oswego City School District
Regents Exam Prep Center: Metric Conversions and Rates
Find out all about measurement in this test prep lesson exploring English and metric measurement. Students can compare metric and customary measurements using the conversion charts, assess how much they have learned using the interactive...
Illustrative Mathematics
Illustrative Mathematics: 8.ee Dvd Profits, Variation 1
Eighth graders examine the costs of producing DVDs, taking into account the cost of building a factory. They need to look at units costs for DVDs, fixed prices, and building costs. They are asked to compare the costs for producing them...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Comparing Ratios and Fractions
Dr. Math helps a student see the connection between fractions and ratios using the names of Flintstone characters. A clever approach that requires an understanding of basic algebra concepts.
Illustrative Mathematics
Illustrative Mathematics: 8.ee Who Has the Best Job?
This problem asks students to compare the incomes for two different jobs, draw their graphs, and explain whether the graphs alone would show who makes the most per hour. Aligns with 8.EE.B.5.
BioEd Online
Bio Ed Online: The Science of the Heart and Circulation
In this unit teachers will evaluate student's current understanding of the heart and circulatory system through a pre-assessment. They will develop group concept maps and then repeat the assessment. Teachers can compare their prior...
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
CK-12 Foundation
Ck 12: Math Grade 4
Browse resources related to fourth-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
PBS
Pbs Learning Media: The Lowdown: Life Expectancy: Finding Ratio Relationships
In this interactive map, learn how life expectancy, obesity, hypertension, and physical activity rates have changed dramatically throughout the United States over the last three decades. The accompanying classroom activity supports...
National Council of Teachers of Mathematics
Nctm: Figure This: Drip Drops
Figure out how much water you waste in a week in this exploration using your problem solving, measurement, and estimation skills. This activity is from the NCTM Math Challenges for Families series.