Curated OER
Triangle Series
Your algebra learners emphasize the"geometric" in geometric series as they use a common ratio between algebraic terms and find that it corresponds to a repeated similarity transformation.
EngageNY
Comparing the Ratio Method with the Parallel Method
Can you prove it? Lead your class through the development of the Side Splitter Theorem through proofs. Individuals connect the ratio and parallel method of dilation through an exploration of two proofs. After completing the proofs,...
Illustrative Mathematics
Sand Under the Swing Set
Help the local elementary school fix their playground by calculating the amount of sand needed near the swing set. The problem practices setting up proportions and ratios with three different options for solving. You can chose the option...
Virginia Department of Education
Similar Solids and Proportional Reasoning
Double the dimensions, quadruple the surface area. Pairs build similar prisms and compare the ratios of their surface areas and volumes to the ratio of the heights. Given two similar cones, partners determine the ratios of the lateral...
Curated OER
Russian Boxes
Sixth graders find the scale factors for length, area and volume. They identify the center point of an enlargement and place similar objects to show a negative enlargement. They report the results of an exploration of scale factors in a...
Houghton Mifflin Harcourt
Similar Polygons and Circles
In these similar polygons and circles worksheets, students complete 15 questions including 9 word problems regarding similar polygons. Students then complete 15 questions including 1 word problem involving circumference, area, and arc...
Curated OER
ExplorA-Pond: 4th Grade Perimeter Estimation
Your geometers are used to finding the perimeter of a square or rectangle, so give them something different this time! With this lesson, small groups will receive a picture of a shoreline and calculate the perimeter. The website listed...
Curated OER
Designing Kites
Sixth graders sketch their own kites by creating a scale drawing of an original design. In this designing kites lesson, 6th graders draw a rough sketch, then accurately draw their design on large paper with a ruler, measuring precisely...
Teach Engineering
Straw Bridges
Pairs work as engineering teams to design and build model bridges from drinking straws and tape. In this third segment in a series of 10, teams compete in an attempt to build the strongest bridge. To help with the design, the groups...
Beyond Benign
Build-A-Math
We can't build our dream house yet, but we can definitely build a model. Scholars use floor plans to build models of their dream homes. Cardboard is as good as any material for this purpose.
Curated OER
Conditions at Sea Introductory Activity, Making Waves
Students explore waves and wind. In this physical and earth science wave lesson, students participate in a wave making activity with an aquarium and a hair dryer. Students complete a data chart recording wave height and related factors....
Curated OER
The Southeast Anatolia Project
This resource is amazing. It is a full project including teacher notes, handouts, procedure, and worksheets. It introduces learners to the GAP project, a social environmental group working to bring irrigation, assistance, and increased...
National Wildlife Federation
Ghost Town
Around 93 percent of the reefs on Australia's Great Barrier Reef have been bleached, and almost one quarter of them are now dead. Scholars research the sea temperatures, especially around the areas with coral reefs, to make connections...
Statistics Education Web
It Creeps. It Crawls. Watch Out For The Blob!
How do you find the area of an irregular shape? Class members calculate the area of an irregular shape by finding the area of a random sampling of the shape. Individuals then utilize a confidence interval to improve accuracy and use a...
Noyce Foundation
Photographs
Scaling needs to be picture perfect. Pupils use proportional reasoning to find the missing dimension of a photo. Class members determine the sizes of paper needed for two configurations of pictures in the short assessment task.
Chymist
Earth Science
Explore the consistency of the earth's layers and soil through modeling. By conducting an engaging experiment, learners develop a model for the earth's layers and a soil profile using edible materials. Each material is chosen based on...
Curated OER
Similarity
In this similarity worksheet, 9th graders solve and complete 6 different types of problems. First, they complete the statement in the box shown. Then, students determine whether they agree or disagree with the statement and given...
Curated OER
Dilations of 2 and 3 dimentional figures and their effect on area, surface area, and volume.
Seventh graders investigate the area and volume of 2D and 3D figures. In this geometry instructional activity, 7th graders create a storyboard explaining their knowledge of 2D and 3D shapes. They analyze their data and interpret their...
Curated OER
Endocrine System: Hormones
The many images and labeled diagrams in this PowerPoint will help learners understand different areas of the endocrine system. The slide
show starts with information about the absorption of lipid and protein based hormones, and then...
Curated OER
A Whole Lot of Shakin' Goin' On!
Students gather data about the 1906 and 1989 earthquakes, make comparisons between the two, and determine the factors that influence the amount of shaking that occurs in an area due to an earthquake. They identify that the distance is...
EngageNY
Getting a Handle on New Transformations 2
Use 2x2 matrices to move along a line. The second day of a two-day lesson plan is the 28th installment in a 32-part unit. Pupils work together to create and solve systems of equations that will map a transformation to a given point. The...
Illustrative Mathematics
Comparing Products
How can 5th graders show understanding that 30 x 225 is half of 60 x 225 without completing the computation? They can use an area model and draw it out. An array, or an open array, is an area model that allows for young learners to...
Curated OER
Isoseismal Maps
Students examine the difference between magnitude and intensity in earthquakes. They complete map work and write a first hand account of a person living in each level of intensity on the Modified Mercalli Scale.
Curated OER
River Run Through It
With vocabulary lists, worksheets, and more, this lesson sets learners on an exploration of the Hudson River area. They read an essay about the area, analyze a relief map of New York State, and complete a worksheet.