# 2nd Grade Math - Non-standard Measurement

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```					2nd Grade Math – Non-standard Measurement
State Standard 4.0    Measurement
Accomplishment 2.4.2       Applying appropriate techniques and tools to measurement
H. Find area and perimeter using non-standard units
Objective:
• Discuss the definition of area and perimeter
• Understand non-standard measurement
• Develop awareness of perimeter and area
• Be able to use non-standard measurement tools
• Increase awareness of portion sizes appropriate for health and prevention of obesity

Materials needed:
paper clips                unifix cubes
yarn                       play doh
paper plates               numerated cubes
round colored counting discs

Instruction:
•   Discuss the definition of area and perimeter
•   Explain ‘non-standard units’ of measurement
o Use grocery items of different sizes to demonstrate area and perimeter
o Brainstorm with the class ideas of how you can use the yarn, paper clips, etc. to
measure the area and perimeter
o Discuss ways you might use non-standard measurement
Capture the students interested by telling them they will be measuring the area
and perimeter of store items (be sure to tell them there is no food in any container)

Activity:
•   Have students get a store item and bring it to the table.
•   Place paper clips, unifix cubes, numerated cubes (dice), etc. on each table.
•   Have the children choose a form of non-standard measurement and measure the area
and perimeter of their item

Relate to Healthy eating – portion control

•   Portion control is important
o for preventing or correcting obesity
o when snacking or eating a meal in order to avoid overeating
o so we can eat foods we enjoy when dieting
•   Non-standard measurement to judge appropriate serving size
o Cubes – two numerated cubes of cheese is one portion or one serving
o Palm of your hand – portion/serving size for all meats (have them place play
dough on the palm of their hand to the size of their hand and place it on their
plate)
hold up your hand – is your palm larger or smaller than a McDonald’s
hamburger
o Baseball – portion/serving size of ice cream, mashed potatoes, and all
vegetables
Have them shape play doh in a ball the size of a baseball and place it in a
bowl or crumple up a piece of paper the size of a baseball
Ask how many French fries they think will equal the size of the paper or
play doh

Conclusion:

Review use of non-standard measurement tools
Non-standard measuring tools can help us when shopping for many household items, moving
furniture, walking off a baseball diamond, etc.
Link non-standard measurement to healthy lifestyles
help us avoid overeating at home or in a restaurant to prevent obesity
help us reduce our weight
help us enjoy foods we like if we should be dieting

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