Curated OER
In Round Numbers
Learners explore the concept of rounding. In this rounding lesson, students use their calculator to round three digit numbers to the nearest 10 or nearest 100. Learners round fractional numbers to the nearest tenth,...
EngageNY
The Decimal Expansion of Some Irrational Numbers
Develop a definition of irrational numbers through an exploration of square roots. The 11th lesson in this series of 25 asks scholars to estimate the value of a square root. Learners observe as the estimation extends further and further...
Curated OER
Living in Base Ten
Middle schoolers explore scientific notation and the structure of the metric system. In this middle school mathematics lesson, students read How Much is a Million? by David M. Schwartz to introduce middle schoolers to the need for...
Curated OER
Approximate Solution to an Equation
Students solve equations through trial and error. In this algebra lesson, students first estimate their answers and then calculate it to check their work. They solve problems involving roots and integers.