MEASUREMENTLesson 2

PHYSICAL SCIENCES – MEASUREMENT

LESSON 2.   Measuring Skills (Lab)

Objective:  Students learn about different forms of measurement.

Materials:

1 cup

Water

Thermometer (F°/C°)

Teacher Notes:

The best way to teach students measurement is for them to actually measure.  Measuring is a skill that takes practice to get a feel for quantity.  If this is a new skill for your students you may want to spend more time on this unit.  The hands-on portion goes over linear, volume, and temperature.  It starts students using formulas to get answers which is very important in geometry to make their work easier.

In the measuring sections (Part 1 and 2) you may want to change the materials to coordinate with your materials.  Hands-on is very important.

In Part 3 it is recommended you have students use a calculator.  It is important they understand how to use one and to check their answers.  Make sure students know how to use a caliper ruler and to read to the closest decimal.

Go over very specific lab rules, especially how to clean up and put things always.  Hands-on is the best way to learn, but it can turn into a nightmare if teachers don think out their own personal order and don’t have control.  We have include enough activities that you may want to use the station technique if you have limited supplies.

Part 1.   1.  1 cup = 237 ml; in order to remember the relationship approximate that one cup is about 250 ml.  2.  ½ cup = 118 ml; 3.  1000 ml, 946 ml = 1 quart; one quart is a little less than a liter   4,5 – depends on student

Part 2.  Depends on how students do experiment; need to observe students technique

Part 3.

 How many sides Total face angles Internal Perimeter (in cm) Area (internal) (cm2) Equilateral triangle b  =  1.8 h =  1.6 3 180 5.4 cm A=1/2bh   1.44 cm2 Isosceles triangle b = 2.1 h = 2.7 3 180 6.3 cm A=1/2bh   2.835 cm2 Square s =  2.5 4 360 10 cm A=s2 6.25 cm2 Rectangle l  = 3.5 w = 2.6 4 360 14 cm A=lw 18.55 cm2 Pentagon b = 3.5 h = 5.3 5 540 17.5 cm A= 5(1/2bh) 46.375 cm2 Hexagon b = 3.5 h = 6 6 720 21 cm A= 6(1/2bh) 63 cm2

Part 4.
Depends on water you supply students