First graders examine the use of number lines in problem solving situations in this series of lessons. They participate in activities in which they move forward and backward on number line on the playground before doing paper and pencil...

Third graders use mental-math strategies to solve two-digit plus two-digit addition problems. They observe and discuss online demonstrations, solve word problems as a class, and independently solve problems and describe their solutions...

Second graders examine how to use mental strategies for addition and subtraction. They look at part/whole strategies for multi-digit problems and define which one would be best used for a particular problem. They use tens frames to solve...

Second graders study digits in 2- or 3-digit whole numbers. They write and solve story problems which involve whole numbers, using addition, subtraction, multiplication, or division.

Students performing a scene about pirates and spend time making a measuring meters incorporating the main character, Captain Blood to add interest. They use meter sticks measuring items from the play and record their answers in meters.

Fourth graders Split a 2-digit number into tens and ones. They use The Multiplier to partition and solve 2-digit by 2-digit multiplications. They describe how to solve 2-digit by 2-digit multiplications using a diagram.

Students explore basic algorithms for addition, subtraction, and multiplication. They use models to demonstrate solving two-digit by two-digit multiplication. Students demonstrate vertical formats to solve multiplication problems.

his unit uses two of the series of four Divider learning objects to support the students division of whole numbers where the quotient is a mixed number (whole number and fraction). The Divider encourages the students to split a division...

In this unit students use the traditional tale of the gingerbread man as a context for ordering and comparing lengths. They compare the length of two objects directly, order three or more objects by length and select objects that are...

Second graders investigate volume through the use of measuring cups. They complete a variety of measuring tasks using kitchen measuring cups. Students accurately measure the volume and compare the results.

Second graders explore liters and milliliters. They estimate volume and accurately measure the volume. Students plan a party and measure volume using liters and milliliters as part of the planning process.

Students explore comparing and ordering volume of containers. They use the context of Goldilocks and the Three Bears to compare the volume of various containers by packing or pouring.

Learners measure objects effectively using standard units, They examine how consistency in the units used allows for easier and more accurate communication of mass measures.

Students participate in five center activities in which they construct three dimensional objects using cubic centimeter manipulatives such as sugar cubes and toothpaste boxes. They determine the volume of the objects. They build a model...

Second graders develop an understanding of 100 and the quantity for which it stands and examine the relationship between 100 and 10 by estimating the number of jelly beans in a jar.

Students discuss their favorite ice cream flavors and read the math problem. They brainstorm the problem and brainstorm for ways to solve the problem. Students work in pairs and share solutions.

Students are introduced to the problem by playing a guessing game of "I am a number, which is half of 6 and 6, what am I?" They explain their answers and see if anyone else had an alternate solution checking for reasonableness.

Learners read the math problem and retell it in their own words. They brainstorm for ways to solve and use questions to focus on the steps used. Students could use other problems involving pirates from the given website.

Students discover that magic squares are interesting objects in both mathematics proper and in recreational mathematics. So they are objects that students should have heard about and experienced.

Third graders problem solve using drawings and map interpretations. They preview graphs and Cartesian geometry. They follow directions on a map using a grid and compass references while simulating they are reading a pirate map.

Fourth graders advance to new levels in the lesson we're dealing with here. It is the fourth of a sequence of six dealing with the same theme. These develop from Level 2 to Level 5. In the process they involve number concepts at the...

Magic squares are interesting objects in both mathematics proper and in recreational mathematics. So they are objects that children should have heard about and experienced. The problems in this sequence give students the opportunity to...

High schoolers solve a problem in a systematic and mathematical way. The use of an equation is applied to a word problem situation. It is necessary that students be familiar with different types of equations.

Student are able to devise and use problem solving strategies to explore problems systematically and mathematically. They also form and solve various types of equations. This lesson requires some prior knowledge of equations.