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.
Helping with Math
Multiplying by Multiples of 10
Elementary schoolers solve six problems, multiplying by multiples of 10. They line up the numbers as shown and then check their answers online.
Curated OER
Factors
Practice factoring numbers by using graph paper, manipulatives and computer applets.
Curated OER
End of the Year Math Terms
In this end of the year math test worksheet, 4th graders complete problems including addition, division, measurement, decimals, and more. Students complete 22 problems.
Curated OER
Partial Quotients
Fifth graders examine the partial-quotients algorithm for finding the answer to a division problem. In this partial quotients lesson, 5th graders demonstrate the process of division through a series of estimations. Students examine the...
Curated OER
Calculating Baseball Statistics
Students calculate baseball statistics. In this data analysis lesson plan, students use baseball statistics to calculate the batting average and slugging percentage. Students visit www.funbrain.com to play a math baseball game.
Pennsylvania Department of Education
Comparing Sets
Young scholars count back with cubes to model subtraction problems. In this subtraction lesson plan, students compare sets of problems and record their results in a table.
Curated OER
Clock Arithmetic and Cryptography
High schoolers investigate modular clock arithmetic and cryptography. They perform basic operations in modular (clock) arithmetic and encode and decode messages using simple shift and affine ciphers.
Curated OER
Comparing Fractions
Students discuss the nature of fractions and compare fractions based on a similar whole to determine relative size.
Curated OER
Clock Arithmetic and Cryptography
Students explore the concept of modular arithmetic and cryptography. In this modular arithmetic and cryptography lesson, students use applets to explore modular arithmetic using a clock and Caesar Ciphers. Students exchange their ciphers...
Curated OER
The Feeding of Baby Lions and snakes
Fourth graders view a Count On It! episode and answer a question about the eating habits of animals. In this animal eating problem instructional activity, 4th graders determine how much more often a baby lion eats than a snake. ...
Curated OER
Let's Take a Trip!
Sixth graders plan a trip for a family of four choosing their travel plan by studying maps to decide upon a route and visiting Websites to get airline and travel schedules. They use ratios and proportions as well as converting fractions...
Curated OER
Mixed Addition and Subtraction Word Problems Two Version 1
For this word problems worksheet, students read the word problems and use addition or subtraction to solve the problems. Students solve 5 word problems.
Curated OER
Division with Dividends to 99
In this math worksheet, students find the answers to the following long division problems. The problems can have remainders.
Curated OER
Dream Car Math
High schoolers collect car cost comparison data from the "Car Wizard" web site to use as problem solving and for calculations related to math.
Curated OER
Let's Take a Trip!
Sixth graders plan trip for family of four, and choose best travel plan by studying maps, considering different routes, and visiting Web sites to get airline and travel schedules.