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.
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?
In this video, students will factor 365 in an attempt to create a better system of months and weeks.
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!
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.
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.
In this lesson, students will deduce the formula to find the area of a triangle, then use that to decompose more complex shapes.
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.
In this video, students will learn a way to visualize fraction multiplication.
Dividing by fractions is counter-intuitive and confusing. We'll use several animations and sketches to develop students' conceptual understanding of this operation.