Chapter 1: Number Sense Section 3: Real Numbers
Topics In Algebra 1 © 2001 Texas Instruments Teacher Notes 1-31
Student Worksheet Notes with Answers
Overview
Tell students:
1. How to find the
Overview
, or tell them to review the instructions on the worksheet.
2. How to navigate the application, if they are not yet familiar with the application.
3. To scroll through the
Overview
on the calculator. Point out new terms, definitions, and
concepts, and tell students to look for them as they go through the
Overview
.
Observations
The
Observations
help students understand number sense concepts relating to real numbers. Tell
students how to find the
Observations
.
Observation 1
Write three different irrational numbers. Students show their
work.
Answers will vary.
Students see this screen
with three possible
answers.
Observation 2
Try these problems . . .
Students use the real number properties to solve the problems,
showing their work.
Students should show
that they know how to use
the properties of the real
number computations as
shortcuts without the
calculator.
•
associative
…
property
:
25
…
24 = 25
…
(4
…
6) = (25
…
4)
…
6 = 100
…
6 = 600
•
distributive
…
over
+
property
:
8
…
102 = 8
…
(100 +2) = (8
…
100) + (8
…
2) = 800 +16 = 816
•
distributive
…
over
N
property
:
6
…
46 = 6
…
(50
N
4) = (6
…
50)
N
(6
…
4) = 300
N
24 = 276
Students see the answers
on the next screen.
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