West Contra Costa Unified School District
Divisibility Rules Justified
How do you know if a number is divisible? Instructors first prove the divisibility rules for three and four and then class members use this modeling to prove given divisibility rules for eight and nine either individually or in groups.
Rational Number Project
Initial Fraction Ideas: Lesson 3
Visual models support young mathematicians as they deepen their fractional number sense in this elementary math lesson. Using fraction circle manipulatives, children explore basic unit fractions as they develop the fundamental...
Curated OER
Defining Division
Upper graders explore division through fair-shares. They will review fair shares and fractions as a segway into division. They start by playing "Share Fairly" game and create mathematical arguments for solving problems. Manipulatives and...
Illustrative Mathematics
How Many Containers in One Cup / Cups in One Container?
The object is to model fraction division by asking “How many are in one group?” It is a difficult concept to understand, but developing the model that shows one cup to a certain amount of container or one container to a certain amount of...
Curated OER
Algae Blooms
Your microbiologists explore a changing algae population and build an exponential function modeling algae concentration from the description given of the relationship between concentrations in cells/ml and days of rapid growth.
Utah Education Network (UEN)
Picnic Field Day
Using laminated paper cookies, get your class exploring the concept of division. Read them One Hundred Hungry Ants, by Elino R.J. Princzes, and have learners model what is happening with toy plastic ants. There are many more fun...
Curated OER
Factors, Prime Factorization, Multiples
Seventh graders examine Prime Factorizations, Multiples, and Factors. In this prime number, factorization, and multiples lesson, 7th graders identify greatest common factors and least common multiples. Students use problem solving skills...
NTTI
Hey Good Lookin', Whatchya Got Cookin'?
What better way to explore working with fractions then by using them when cooking? In this instructional activity, students use video, the Internet, and real world, hands-on learning activities to enhance their understanding of...
San Bernardino Co. Supt. of Schools
Was Julius Caesar a Good Leader for Rome?
Learners consider the various perspectives that different groups in Roman society may have had for Julius Caesar, such as Roman soldiers, senators, the working class, and slaves. The primary activity involves a reading of Caesar's...
Pennsylvania Department of Education
Use Order of Operations to Evaluate Expressions—No Grouping Symbols
Young scholars identify and explain different types of data collection and graphs. In this graphs and data collection lesson, students record their observations of a variety of data collection tools and graphs displayed in the room....
Curated OER
PLANETS IN PROPORTION
Students discover scales for both the solar bodies' relative sizes and their distances from the sun. They find equatorial circumference and volumes of their solar bodies. Students apply estimation strategies and proportioanl reasoning to...
Curated OER
Teen Spirit
Students examine the attributes of teamwork. In this current events lesson, students compare and contrast gangs with teams. Students conduct their own school gang audit and discuss the implications of violence.