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Khan Academy
Khan: Lsn 12: Exponential Functions, Equations, Expressions and Radicals
Lesson 2 of 4 for Passport to Advanced Math. Learners will build quadratic and exponential functions that model a given context; solve radical equations; work with rational expressions, including fractions with a variable in the...
University of Cambridge
University of Cambridge: Nrich: Practice Run
Sharpen your logic and fraction skills while working on this challenge. Solution.
PBS
Pbs: One Variable Equations: How Much Did He Read?
Visualize a word problem in multiple ways to develop your problem solving skills. This video focuses on converting a problem with fractions into a one-variable equation and alternately modeling it using unit blocks.