6-8
Students recall and model the square root as the length of one side of a square. But what if the square is not a perfect square? This collection of activities explores the square roots of not-so-perfect squares and develops an algorithm to express the not-so-perfect square root as a rational value.
6-8
Using two online activities, students use ratios and percents to compare population density and explore various statistical measures.
3-5, 6-8
In this lesson, students use a Venn diagram to sort prime factors of two or more positive integers. Students calculate the greatest common factor by multiplying common prime factors and develop a definition based on their exploration.
3-5, 6-8
This strategy game requires you to select cards with a specified sum before your opponent (also available on iOS and Android).
Pre-K-2, 3-5, 6-8, 9-12
Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? You can create all those things and more! Place the images you want, then export it as a PDF or as a JPG image.
3-5, 6-8
Dividing Numbers into Two Factors and Building Arrays to Represent Each Factorization
3-5, 6-8
Explore different representations for fractions including improper
fractions, mixed numbers, decimals, and percentages. Additionally, there
are length, area, region, and set models.
6-8
In this lesson,
students learn the definition of like terms and gain practice in identifying
key features to sort and combine them. Most middle school students are adept at
recognizing the nuances of dress and manner that identify groups and cliques
among their peers. This lesson applies the observation and sorting skills that
students already possess to the important task of identifying and combining
like terms. Students will play the game Ker-Splash and derive rules for working
with like terms.
3-5, 6-8
Studying the behavior and motion of dinosaurs is obviously a
challenge since these creatures are extinct. If researchers wish to examine the
running velocity of a dinosaur, they must instead consider other evidence of
dinosaur motion and make an indirect estimate. In this lesson, students will
play the role of researchers who field test the Alexander Formula—a formula that uses paleontology data to estimate dinosaur running
velocities. Students will serve as human analogues, making measurements on
themselves, computing predicted running velocities using the Alexander Formula,
and calculating their actual running velocities. They will then evaluate the
accuracy of the formula by comparing estimated and actual running velocities
for the class.
6-8
In this lesson, students will play card
and computer games by adding fractions to make 1. Students will determine how
the fractions are related, by first determining what they have and then how
much more is needed. Through different interactive games, students will utilize their skills and build upon them to expand their
understanding of fractions. Students will be able to determine common
denominators and other strategies to add fractions with like and unlike
denominators.
