Curated OER
Math: Navigating the World Around Me
Young mathematicians research and discuss real world math word problems and ways in which they apply math concepts in their everyday lives. They create a storyboard of a math word problem from which they create a slide for a multi-media...
Achieve
Fences
Pupils design a fence for a backyard pool. Scholars develop a fence design based on given constraints, determine the amount of material they need, and calculate the cost of the project. 
Achieve
Corn and Oats
How much land does a parcel hold? How much fertilizer does it take for a field of corn? Pupils answer these questions and more as they apply ratio reasoning and unit analysis. 
Curated OER
All A-buzz About Math
Second graders participate in Math-Eze activities to comprehend word problems. In this word problem lesson, 2nd graders recognize why a hexagon is the best shape for a beehive. Students calculate how far bees must travel to find 2 lbs....
Curated OER
Computation and Estimation
Learners read "Moosey Saves Money" and use mental math to determine if Moosey is saving any money. In this math computation and estimation lesson, students discuss the story in relation to saving money, recording in their math journal....
Curated OER
Blueberries for Sal
Students read the book "Blueberries for Sal" and complete various computation math activities with blueberries. In this computation lesson, students complete number sentences, play guessing games, and solve story problems using...
Partnership for Educating Colorado Students 
Mayan Mathematics and Architecture
Take young scholars on a trip through history with this unit on the mathematics and architecture of the Mayan civilization. Starting with a introduction to their base twenty number system and the symbols they used, this eight-lesson unit...
Curated OER
Dividing by 4's
Third graders explore math functions by completing problem solving activities. In this division lesson, 3rd graders utilize the division strategies acquired earlier to divide multiple digit numbers by 4's. Students complete problems on...
Curated OER
Block It: Using a Manipulative to Solve Math Problems
Young scholars practice using visuals to solve math problems. In this math manipulative lesson, students utilize pattern blocks to participate in a class game in which geometric shapes touch other player's pieces. Young scholars gain...
Curated OER
BASE-ic Space Travel
In this 3-day place-value lesson, upper-elementary kids investigate the base 5 and base 2 systems as an introduction to exponents and powers. They create a pocket chart to help ground their understanding of bases, exponents, and powers,...
Curated OER
Recycling
Students relate recycling to waste reduction. In this science lesson, students talk about the environment and how recycling certain natural resources actually saves on energy.  They also discuss what type of recycling causes...
Curated OER
Let's Take a Trip!
Sixth graders plan trip for family of four, and choose best travel plan by studying maps, considering different routes, and visiting Web sites to get airline and travel schedules.
Curated OER
Can You Measure This?
Fifth graders design their own house, while also using problem-solving skills involving perimeter and area. They exchange houses with a partner and find the perimeter and area of the window, doors, and front side of the house.
Curated OER
Cutting the Wood
Learners demonstrate and describe the effect of multiplying or dividing by a fraction less than or greater than one.  They create and explain a variety of equivalent ratios that represent a given situation.  Students draw a picture of...
Curated OER
Graph and Compare the Adventure's Temperature Vs. Local Temperature
Learners explore the concept graphing data. In this graphing data lesson, students use weather data from their local weather and some other city and graph them. Learners plot the local weather vs. another city. Students record...