Factors Lesson Plan
Students will learn how to factor numbers by using manipulatives and computer applets.
Number and Operations
Understand numbers, ways of representing numbers, relationships among numbers, and number systems
Understand meanings of operations and how they relate to one another
- describe classes of numbers according to characteristics such as
the nature of their factors.
Compute fluently and make reasonable estimates
- understand the effects of multiplying and dividing whole numbers;
- identify and use relationships between operations, such as division as
the inverse of multiplication, to solve problems;
- develop fluency in adding, subtracting, multiplying, and dividing whole
Students must be able to:
- perform basic mouse manipulations such as point,
click and drag.
- use a browser such as Netscape for experimenting with
Students will need:
- access to a browser.
- access to pencil and paper.
- Focus and Review
- Pass out 2 pieces of graph paper to each student.
- Instruct the students to draw all possible rectangles with an area of 10 squares.
- The students should draw squares with dimensions of 1x10, 2x5, 5x2, and 10x1.
- Call on several students to draw their rectangles on the board.
- Next, instruct the students to draw all possible rectangles with an area of 24 squares.
- Continue having the students draw rectangles for different size areas
until they recognize that there is a connection between the dimensions of the
rectangles and the area of the rectangles.
- Call on a student to explain this connection to the class.
Students will demonstrate their ability to list the factors for different numbers.
- Teacher Input
- Explain to the class the term factor.
- Guided Practice
- Work a few problems with the class demonstrating how to using the Factorize
and the Factorize 2 applets.
- Independant Practice
- Instruct the students to work 10 computer generated problems from each applet.
Review the term factor and some different methods that can be used to
find the factors of a given number.