# Math Lessons

• #### Calculators, Patterns, and Multiplying By Decimals

Using calculators, students will gain familiarity with the patterns that occur when multiplying by decimals. They'll note these patterns and use them to make predictions before checking with their calculator.

• #### Rounding Numbers (But Not To 10)

In this video, students will investigate how to round to numbers other than multiples of ten. What if we want to round to the nearest 9, 12, 52, or 75?

• #### Factoring and Calendars

In this video, students will factor 365 in an attempt to create a better system of months and weeks.

• #### Place Value (Beyond Base 10)

To better understand place value, we venture beyond the decimal number system and explore a Base 9 system. Students will be exposed to ancient Babylon's Base 60 system and computers' Binary and Hexadecimal before creating their own number system!

• #### Reflective Symmetry

Students will investigate symmetry in the alphabet, forming words with reflective symmetry, and eventually creating full sentences.

Students learn to group a set of quadrilaterals into flexible categories.

• #### Parallel and Perpendicular

Students learn about parallel and perpendicular lines and then hunt for examples of both in pieces of art.

Students learn about lines, line segments, and rays with a focus on some fascinating aspects of infinity. In the end, they ponder what one type would think about another.

• #### Area of Triangles

In this lesson, students will deduce the formula to find the area of a triangle, then use that to decompose more complex shapes.

• #### Doubling Dollars

Students will double a single dollar once per day and discover how long it takes to reach \$1 million. Along the way, they'll move from repeated multiplication to using exponents.

• #### Visualizing Fraction Multiplication

In this video, students will learn a way to visualize fraction multiplication.

• #### A Visual Guide To Dividing By Fractions

Dividing by fractions is counter-intuitive and confusing. We'll use several animations and sketches to develop students' conceptual understanding of this operation.