Juice Containers

Using models rather than algorithms for computing with fractions.

Camera Lens Aperture

Looking at the inversely proportional relationship between camera aperture and f-stops in photography.

Inversely Proportional

Exploring inverse proportion within the topic of speed and time relationships.

Math and Cookies

Looking at proportion in the context of a friendly argument over sharing cookies.

Volume and Pressure

Looking at how inverse proportion relates to science.

Cliff or Evelyn

Address the role of place value in the algorithm for dividing decimals.

Two Interpretations of Decimal Division

Creating story problems using two different approaches to division.

Partial Products & Decimals

Understanding how the algorithm for multiplying decimals really works.

Decimals as Arrays

Representing decimal products using area models.

Let’s Help Ms. Lee

Considering multiple approaches to a decimal division problem.