Free video lessons for ratios and proportions (6th and 7th grade math/pre-algebra)
Find here free online math videos on ratios, proportions, and related topics: solving proportions, word problems, unit rates, proportional relationships, scaling geometric figures, and maps.
The videos match the lessons in the Blue Series book Math Mammoth Ratios, Proportions, and Problem Solving. As far as the complete curriculum (Light Blue), the lessons on ratios match chapter 4 of Math Mammoth Grade 6, and the rest match lessons in chapter 6 of Math Mammoth Grade 7 curriculum.
Ratios
Word problems involving unit rates
Equivalent rates — using equivalent rates to solve problems, and also graphing them (2 videos)
Using ratios to convert measurement units
Proportions
Unit rates and more about proportions
How to find the unit rate, including with fractions
Proportional relationships / Direct variation
Scaling figures and the scale ratio
How to calculate distances on the map or in reality using the map scale
These videos match the lessons in the book Math Mammoth Ratios, Proportions, and Problem Solving (Blue Series book), and the lessons in chapter 6 of Math Mammoth Grade 7 curriculum. In either of those, you will get MANY more practice exercises, word problems, and puzzles than what are shown in the videos, and also some lessons that are not in covered in this set of videos.
131 pages
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