3-5
In the following open-ended exploration, students estimate, experiment, and display real-life data. Students use the number of breaths taken during a specified time period as the context for this exploration.
3-5
Students participate in an activity in which they develop number sense in and around the shopping mall. They develop their skills in determining percents and estimating area.
3-5
Students investigate the ways shapes can be divided into equal pieces
with one or two cuts. The lesson provides a review of the following vocabulary
terms:
square, triangle, and rectangle; congruent, one-half, and one-fourth.
The other lessons in this unit build on this introductory lesson.
3-5
Students create designs and describe them to a classmate, using fractional and geometric terms. This lesson provides a context for using the following vocabulary terms: horizontal, vertical, square, rectangle, triangle, diagonal, one-half, and one-fourth.
3-5
In this lesson, students generate products using the number line model.
This model highlights the measurement aspect of multiplication and is a
distinctly different representation of the operation. The order
(commutative) property of multiplication is also introduced. Students
are encouraged to predict products and to answer puzzles involving
multiplication.
3-5
This lesson builds on the previous lesson and encourages students to
explore another model for multiplication, the familiar set model.
Students find products using equal sets and present results in the form
of a table. The students apply their knowledge about multiplication in
the creation of pictographs.
3-5
This lesson encourages students to explore the array model of
multiplication, a model that lays an important foundation for the later
study of area. The lesson focuses on the factors 4 and 6. Students will
also explore products with 0 or 1 as a factors. First students make
arrays with counters, and then they create a second concrete example of
the array model using toothpicks. They also write problems which
involve multiplication.
3-5
This lesson encourages students to explore another model of
multiplication, the balance beam, and another relationship, the inverse
of multiplication. This exploration leads naturally into representing
multiplication facts in equation form. In addition to extending their
understandings of the concept of multiplication, students begin to
practice the multiplication facts by playing the Product Game.
3-5
Students skip count and examine multiplication patterns. They also explore the commutative property of multiplication.
3-5
Students use a web-based calculator to create and compare counting
patterns using the constant function feature of the calculator. Making
connections between multiple representations of counting patterns
reinforces students understanding of this important idea and helps them
recall these patterns as multiplication facts.
