Illustrative Mathematics
Illustrative Mathematics: 7.ee Miles to Kilometers
In this instructional activity, 7th graders write algebraic expressions and determine if they have the same answer.
Khan Academy
Khan Academy: Manipulate Formulas
Solve multi-variable formulas for a specific variable in order to solve some word problems.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.1: Planes and Wheat
This is an exercise in creating equations from a situation with many variables. By giving three different scenarios, students will be reviewing their definitions of the variables to emphasize the importance of defining variables when...
Alabama Learning Exchange
Alex: Calendar Fun Operations
This activity is designed to help students evaluate numerical expressions by using order of operations. The students will be provided a calendar for the current month of the year. Students will then be provided with a worksheet that...
Khan Academy
Khan Academy: Equations and Inequalities Word Problems
Construct an equation or an inequality that models a given context. Modeling expressions can be quadratic, rational, or exponential. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...
Free Math Help
Free Math Help: Substitution
Students investigate the substitution process of replacing a variable in an expression with its actual value.
Illustrative Mathematics
Illustrative Mathematics: G Mg Toilet Roll
Picture a roll of toilet paper; assume that the paper in the roll is very tightly rolled. Assuming that the paper in the roll is very thin, find a relationship between the thickness of the paper, the inner and outer radii of the roll,...