Unit 2 Dilations, Similarity,
& Introducing Slope
Lesson
Standards
Learning Targets
Additional Resources
Lesson 1:
Addressing:
NC.8.G.4
Building Toward:
NC.8.G.3
Building On:
NC.6.NS.1
NC.7.G.1
I can decide if one rectangle is a dilation of another rectangle.
I know how to use a center and a scale factor to describe a dilation.
Lesson 2:
Addressing:
NC.8.G.3
Building On:
NC.3.G.1
NC.4.MD.6
I can apply dilations to figures on a circular grid when the center of dilation is the center of the grid.
Lesson 3:
I can apply a dilation to a polygon using a ruler.
Lesson 4:
I can apply dilations to figures on a rectangular grid.
If I know the angle measures and side lengths of a polygon, I know the angle measures and side lengths of the polygon if I apply a dilation with a certain scale factor.
Lesson 5:
I can apply dilations to polygons on a rectangular grid if I know the coordinates of the vertices and of the center of dilation.
Lesson 6:
I can apply a sequence of transformations to one figure to get a similar figure.
I can use a sequence of transformations to explain why two figures are similar.
Khan Academy Video
Testing similarity through transformations
Digital Manipulative
6.2: Similarity Transformations (Part 1)
Khan Academy Practice
Similarity and Transformations
Video Lesson Summary: G8U2V2 Similarity From Illustrative Mathematics
Lesson 7:
I know the relationship between angle measures and side lengths in similar polygons.
I can use angle measures and side lengths to conclude that two polygons are not similar.
Khan Academy Videos
Dilation scale factor examples
Dilations and shape properties
Khan Academy Practice
Video Lesson Summary: G8U2V2 Similarity From Illustrative Mathematics
Lesson 8:
I know how to decide if two triangles are similar just by looking at their angle measures.
I can find missing side lengths in a pair of similar triangles using quotients of side lengths.
I can decide if two triangles are similar by looking at quotients of lengths of corresponding sides.
Addressing:
NC.8.F.4
Building On:
NC.5.NBT.7
NC.5.NF.3
NC.8.G.4
I can draw a line on a grid with a given slope.
I can find the slope of a line on a grid.
Khan Academy Video
Digital Manipulative
10.3: Multiple Lines with the Same Slope
IXL Math
Video Lesson Summary: G8U2V3 Slope From Illustrative Mathematics
Addressing:
NC.8.F.4
Building On:
NC.6.G.3
NC.7.RP.2
NC.8.G.4
I can decide whether a point is on a line by finding quotients of horizontal and vertical distances.
I can find an equation for a line and use that to decide which points are on that line.
Lesson 13:
Addressing:
NC.8.G.5
Building Toward:
NC.8.G.4
NC.8.G.5
Building On:
NC.7.RP.2
I can model a real-world context with similar triangles to find the height of an unknown object.