Students 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.  Students round fractional numbers to the nearest tenth,...

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...

Students 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 students to the need for scientific...

Learners 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.