TIPS4Math
Overall Expectations
Grade 1
Mass – Non-Standard Units
Students will:
• Estimate, measure, and describe length, area, mass, capacity, time, and temperature, using non-standard units of the same size
(1m28)
• Compare, describe, and order objects, using attributes measured in non-standard units (1m29)
• Demonstrate an understanding of the concept of equality, using concrete materials and addition and subtraction to 10 (1m59)
Specific Expectations
Students will:
• Estimate, measure, and describe the mass and/or capacity of an object, through investigation using non-standard units (1m34)
• Compare two or three objects using measurable attributes [mass], and describe the objects using relative terms (1m39)
• Demonstrate examples of equality, through investigation, using a “balance” model (1m67)
Lesson
Establish the Concept •
of Mass and the Use
of a Balance Scale
•
Use a Balance Scale
to Determine Mass
•
Investigate the
Relationship Between
Unit Heaviness and
Number of Units
•
EduGAINS-Mathematics
Learning Focus
Compare objects using the attribute of mass
to measure with a focus on how heavy they feel
as opposed to size using relative terms (e.g.,
heavier, lighter, same)
Investigate the use and interpretation of a
balance scale to verify the comparison of the
mass of objects
Measure and describe the mass of various
objects
o measure different objects with same
non-standard units
o use a balance scale to create balance
between the object and the units of measure
o determine the object’s mass by counting the
units
Investigate the relationship between the
heaviness of a unit of mass and the number of
units needed
o measure and describe the mass of the same
object using different non-standard units
o recognize the heavier the unit used, the
fewer the number of units needed
Resources
Guide to Effective Instruction: Measurement K to 3
• pp 67 - 69 Mass-ive Animals
• p 70 How Does a Balance Work?
• p 70 Whose Snowman is Heavier?
Page 1 of 3
TIPS4Math
Lesson
Mass – Non-Standard Units (continued)
Compare the Mass of
Two or Three Objects
•
Size Doesn’t Always
Indicate the Mass
•
Explore Equality
•
Using a Balance Scale
EduGAINS-Mathematics
Learning Focus
Estimate, measure and compare the mass of
various objects
o measure different objects with the same
non-standard units
o ensure sufficient number of same
non-standard units are available (e.g.,
linking cubes, marbles, counters)
Develop the understanding that:
o objects of the same size can have different
masses
o objects of the same mass can have different
sizes
o larger objects do not always have greater
mass/smaller objects do not always have
lesser mass
Explore composition of number by using mass
(e.g., by balancing 4 blue cubes with 3 yellow
cubes/ 1 red cube, or 2 blue/2 green cubes
balanced with 3 yellow/1 red cube, or 1 blue/1
orange/2 yellow cubes balanced with 4 different
coloured cubes)
Grade 1
Resources
Guide to Effective Instruction: Measurement K to 3
• pp 67 - 69 Mass-ive Animals
• p 70 Whose Snowman is Heavier?
• p 71 Balancing Animals
Guide to Effective Instruction: Measurement K to 3
• p 71 Small and Heavy, Large and Light
Page 2 of 3
TIPS4Math
Establish the Concept of Mass and the Use of a Balance Scale
Resource
URL
Guide to Effective Instruction:
Measurement K to 3
Grade 1
http://oame.on.ca/eduproject/ontariomathedresources/files/Measurement%20K-3.pdf
Compare the Mass of Two or Three Objects
Resource
URL
Guide to Effective Instruction:
Measurement K to 3
http://oame.on.ca/eduproject/ontariomathedresources/files/Measurement%20K-3.pdf
Size Doesn’t Always Indicate the Mass
Resource
URL
Guide to Effective Instruction:
Measurement K to 3
EduGAINS-Mathematics
http://oame.on.ca/eduproject/ontariomathedresources/files/Measurement%20K-3.pdf
Page 3 of 3