Play the Mystery Number Game.
While students
refer to their 100 Chart page, provide clues to a number.
As students identify the mystery number, they
should point to it on the 100 Chart.
- I'm thinking of a number that is 6 tens and 3 ones.
What is my number? (63) Even or odd? (odd) How
do you know? (Possible response: It does not end in
a 2, 4, 6, 8, 0 like the even numbers do.)
- I'm thinking of a number that is 4 tens and 6 ones.
What is my number? (46) Even or odd? (even) How
do you know? (Possible response: It ends in a 2, 4, 6,
8, 0 like the even numbers do.)
- I'm thinking of a number that is one more than 42.
(43) How did you find it? (Possible response: I
counted on one. I moved over one to the right.)
- I'm thinking of a number that is three less than 70.
(67) How did you find it? (Possible response: I
started on 70, then counted back three.)
- I'm thinking of a number that I said when we skip
counted by fives. It is two more than 28. (30) Odd or
even? (even) How did you find it? (Possible
response: I started on 28, then counted on 2 more
spaces.)
Assign the Patterns in Numbers pages in the Student
Activity Book to provide additional practice with
extending and describing the patterns on the
100 Chart. Refer students to the Math Practices page
in the Reference section of the Student Activity Book.
Direct students' attention to Math Practice 3, Check
for reasonableness, and Math Practice 5, Show my
work. Tell students that in Question H, they will have
a chance to help a fellow student.
- If someone needs help with a problem, what might
you tell them? (Possible response: I would show
them how their thinking does not make sense and
show them another way.)
Tell students that in Question L, they will have to
show their work.
- What kinds of tools can you use to find number patterns?
(Possible response: 100 Chart, number lines,
or some connecting cubes)
Use the Patterns in Numbers pages with the Feedback Box in
the Student Activity Book to assess students' abilities to
identify, describe and extend repeating patterns [E3] and
growing patterns [E4], and represent patterns using the 100
Chart, words, and symbols [E6]. This assessment also
provides an opportunity to analyze another student's thinking
[MPE3] and show their thinking and reasoning [MPE5].
The Mystery Number Game can be used as targeted practice.
Have student pairs write mystery number clues for each other.
See Materials Preparation.
