Substitution_evaluating_expressions
Learn how to substitute (or "plug in") values for variables and evaluate algebraic expressions.
One_step_addition_subtraction_equations
Solve equations by adding and subtracting numbers from both sides.
Learn how to solve equations like 2x+7=13 and 3(x+4)=3, which can be solved in two steps.
Explore how the value of an algebraic expression changes as the value of its variable changes.
A high-level, conceptual walk-through of what an equation represents and why we do the same thing to both sides of it
Wait, why are we using letters in math? How can an 'x' represent a number? What number is it? This tutorial is great if you're just beginning to delve into the world of variables and expressions.
One_step_equation_word_problems
Let's use our algebra tools to solve a problem of earth-shattering importance: which Super Yoga plan is the best value! In this word problem, you'll put to practice your knowledge of variables, substitution, and one-step equations.
Writing_basic_algebraic_expressions_word_problems
Learn how to write algebraic expressions (expressions with variables) to model real-world situations.
One_step_multiplication_and_division_equations
Solve equations by multiplying and dividing numbers from both sides.
Writing_algebraic_expressions_introduction
Learn the basics of writing expressions with variables.
Inequalities_Greater_than_and_less_than_basics
Equality is usually a good thing, but the world is not a perfect place. No matter how hard we try, we can't help but compare one thing to another and realize how unequal they may be. This tutorial gives you the tools to do these comparisons in the mathematical world (which we call inequalities). You'll become familiar with the "greater than" and "less than symbols" and learn to use them.
Evaluating_expressions_word_problems
Learn how to plug in values to evaluate real-world expressions.
Explore what it means for equations with variables (algebraic equations) to be solved.
Constructing_numeric_expressions
Let's construct and interpret expressions from word problems. We can also think about what the effects of parentheses are.
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