Ordering Fractions - Sharp EL-531RH Teachers Manual

Ordering Fractions

• • • • • • • • • • • • • • • • • • • • • Objective • • • • • • • • • • • • • • • • • • • • •
Understand and use fractions.
Understand the interrelationship between fractions and decimals.
• • • • • • • • • • • • • • • Explanation of the activity • • • • • • • • • • • • • •
Estimate where a given fraction would be located on a numerical line.
Check the answer using the calculator.
While working on this activity, students will be developing their understanding of the relative sizes of
common fractions. The activity suggests an approach to teaching equivalence of common fractions.
• • • • • • • • • • • • • • • • • Using the calculator • • • • • • • • • • • • • • • • •
Calculator functions used: Addition, division, fractional calculation
You will need a 0 – 2 number line.
Estimate where the following common fractions should be placed on the number line
and then record estimates.
, , , , , ,
Use a calculator and a ruler to check your estimates.
Example A:
Find the value of the fraction .
Using division:
1 2
Using fractional calculation:
1
2 on the calculator display means .
1
2
Convert to decimal notation.
, , ,
16
Junior high school/
Elementary school
(upper grades)