Curated OER
Lessen the Loan
Middle-schoolers explore the concept linear equations. They use the internet to navigate through videos and problems. Pupils problem solve to determine rates of change, slope, and x and y-intercepts.
Other
Desmos: Marcellus the Giant
Students explore proportional relationships in this activity as they create a giant that is proportional to an original model. The proportions are graphed and students can interact with the graph to change the giant's size.
Other
Desmos: Tile Pile
Students explore proportional relationships in this activity as they build a ratio table in order to project how many tiles would be needed to cover the area of a floor.
University of Cambridge
University of Cambridge: Maths and Sports: The Home Advantage
In the 2008 Beijing Olympics the UK finished 4th in the total medal count. How might we do in 2012, and does the country hosting the Olympics have an edge?
Illustrative Mathematics
Illustrative Mathematics: 6.rp Walk a Thon 1
A performance task where students fill in the missing values on a table, plot the corresponding points in the coordinate plane, and find the two unit rates that are associated with this proportional relationship.
Illustrative Mathematics
Illustrative Mathematics: 8.ee Sore Throats, Variation 2
In this task where two saltwater solutions are compared, 8th graders must find equivalent ratios, write an equation that works for both solutions, draw the equation's graph, and interpret the slope as a unit rate. Aligns with 8.EE.B.5.
Illustrative Mathematics
Illustrative Mathematics: 8.ee Equations of Lines
For this task, 8th graders are presented with two intersecting line graphs and their linear equations. No values are shown on the axes. They are asked to interpret the constants in the equations in terms of their graphs, and make some...
Illustrative Mathematics
Illustrative Mathematics: 8.ee Comparing Speeds in Graphs and Equations
This task provides the opportunity for students to reason about graphs, slopes, and rates without having a scale on the axes or an equation to represent the graphs. Aligns with 8.EE.B.5.
Khan Academy
Khan Academy: Constant of Proportionality From Equations
Practice finding the constant of proportionality in equations.
CK-12 Foundation
Ck 12: Measurement: Scale Distances or Dimensions
[Free Registration/Login may be required to access all resource tools.] Recognize unit scale as a ratio between units of measure of scale dimension to actual dimension.
Quia
Ixl Learning: Constant of Proportionality
Brush up on your math skills relating to the constant of proportionality then try some practice problems to test your understanding.
PBS
Pbs: Scale City: Proportional Relationships in the Real World
In this video, students visit the Kentucky Horse Park where they are introduced to the question How are speed, time, and distance interrelated? The accompanying activity builds on a demonstration from the video of the length of Man o'...
PBS
Pbs: Scale City: Proportions and Music in the Real World
In this video-through footage of the calliope aboard the Belle of Louisville, a church pipe organ, and various instruments at a recording studio-students are introduced to the mathematical concept that the length of a musical pipe or a...