Week 1

Factors & Multiples
Hi, kids. By the end of this e-tivity, you will be able to:

1. identify the multiples and factors of a given number,
2. find out if a number is prime, composite, odd, or even, &
3. properly use the words factor, multiple, odd, even, prime and composite

Average online time: 2 hours
Average offline time: 2 hours
Suggested schedule: click here


Step 1. What do I know about how numbers are classified?
Type your answers in the following box, write down your name and then press the "shout" button.

  Step 2. Exploring key Vocabulary

■ Click here to play a fun game

■ Listen to how each of the following words is pronounced, once in the Merrian-Webster Online Dictionary website click on this icon

a) odd     b) even    c) prime    d) composite     e) factor     f) multiple  


Step 3. Understanding key Vocabulary

Visit each of the following links and organize a chart that includes the definition of each of the above words as well as examples. Your table should look like this one.

■ A video about prime and composite numbers
■ A video about odd and even numbers
■ A video about how to find the factors of a number
■ A short lesson about multiples

Using these key words in context
Click here to check if you have understood the meaning of each word. 

Telling others about your favorite number
Time to work cooperatively, add one sticky note to this wallwisher wall.
a) You need to tell us about your special number and whether it is odd/even, & prime/composite.
b) In addition, you need to list all the factors of that number and at least five of its multiples.

Step 4. Extended Practice
Think about the questions you have about the topic. Write them down, and without doubt you will be able to answer them after playing these games.

■ Whacking King Kong if he is holding a prime number
■ Is the number odd or even?
■ Playing the Product Game (a game about finding out multiples of a given number)
■ Playing the Factor Game (a game about finding out the factors of a given number)

Step 5. Assessing Understanding
Choose between any of these two assignments:

■ Writing a 200-word letter to a famous mathematician explaining him/her about the six words we have learned throughout this unit. You need to include examples as well.

■ Creating a short video or a power point presentation addressed to a fourth grade student who is eager to know about odd, even, prime, composite, factors, and multiples.

Once you have finished it, send it to abogoya@rochester.edu.co. If you have any question, please leave a comment at the end of this entry. I'll be happy to help you out!