# Write a Given Finite Geometric Series Using Sigma (Summation) Notation

This video explains how to write a given geometric series using sigma notation. The sum is then found.

# Similar Polygons: Find Missing Perimeter Given the Ratio of Areas (CC:6.G.1)

This video explains how to determine the missing perimeter of two similar rectangles given the ratio of the area.

# Similar Polygons: Find Missing Area Given the Ratio of Perimeters (CC:6.G.1)

This video explains how to determine the missing area of two similar rectangles given the ratio of the perimeters.

# Discover the Ratios of Sides, Perimeters, and Areas of Similar Polygons (CC:6.G.1)

This video uses two similar triangles to discover the ratio of corresponding sides, perimeter, and area.

# Convert Fluid Ounces to Half-Gallons Using Unit Fractions and Proportions

This video explains how to perform a conversion using unit fractions and proportions.

# Determine the Height of a Building Using a Scale Factor (Proportion)

This video explains how to use a proportion and a given scale factor to determine the height of a building and the height of 1 floor of the building.

# Use a Ratio and Tape (Bar) Diagram to Determine a Nut Mix

This video uses a tape or bar diagram to explain the meaning of a ratio. The tape diagram is used to determine a number of nuts in a mix.