Mathed Up!
Negative Scale Factor
Class members investigate the effect of a negative scale factor dilation on coordinate shapes as they watch a short video that shows an example of a geometric figure undergoing a dilation with a negative scale factor. Learners then try a...
Curated OER
Calculating Perimeter Using Grid Method
In this perimeter worksheet, students use sets of grids to calculate the perimeter of shaded areas in units. A reference web site is given for additional activities.
Virginia Department of Education
Area and Perimeter
Develop a strategy for finding the area and perimeter of irregular figures. Building on an understanding of finding area and perimeter of rectangles and triangles, learners apply the same concepts to composite figures. After practicing...
Curated OER
Calculating Area
In this area worksheet, students use shaded areas on a grid to calculate area, writing the area in square units. A reference web site is given for additional activities.
Curated OER
Calculate Area Using Grids
In this area activity, students use shaded grids to calculate area, writing area in square units. A reference web site is given for additional activities.
Curated OER
Calculating Area
In this area worksheet, students calculate the area of shaded figures shown on grids. A reference web site is given for additional activities
Curated OER
Calculate Perimeter Using Grid Method
In this perimeter worksheet, students find the perimeter of shaded areas shown a grids, 2 total. Students write total area in square units. A reference web site is given for additional activities.
Curated OER
Calculate Perimeter Using Grid Method
In this calculating perimeter worksheet, students find the perimeter of shaded areas shown on grids, writing perimeter in units. A reference web site is given for additional activities.
Illustrative Mathematics
Overlapping Squares
The objective of this activity is to find the percent of the area of a two squares overlapping. Mathematicians find the ratio of area for the part that overlaps to the rectangle formed. The final answer is a percent as a rate per 100....
Curated OER
Probability and Geometry Problems
In this online math worksheet, students consider a variety of scenarios which include elements of geometry and probability. This excellent resource allows the students to check their answers, and to get "hints" should they run into...