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Grade 8 Math
Idaho Department of Education Content Standards 
Objective  Sub Objectives  Task Analysis  Essential Vocabulary  Sample Assessment 
Standard 2: Concepts and Principles of Measurement  
Goal 2.1: Understand and use U.S. customary and metric measurements. 
8.M.2.1.1 Select and use appropriate
units and tools to make formal measurements in both systems.
CL: C 
• Select and use appropriate units
and tools to make formal measurements in both systems 
• determine appropriate customary and
metric units for given objects • use appropriate tools for measurement in customary and metric system 
• capacity • volume • liter • meter •
gram • milli • centi • kilo 
• Measure the length of your pencil
to the nearest centimeter. • What unit of measure would you use to find the capacity of a cereal box? 
8.M.2.1.2 Apply estimation of measurement to
realworld and content problems using standard measuring devices. CL: 
• Apply estimation of measurement to realworld
and content problems using standard measuring devices 
• select an appropriate unit of measure for the
problem • demonstrate magnitude of measurements 
• magnitude  • About how many meters long is a classroom? • Which is more a kilometer or a mile? 

8.M.2.1.3 Compare the differences and
relationships among measures of perimeter, area, and volume (capacity) within both systems. CL: 
• Compare the differences and relationships among measures of perimeter, area, and volume (capacity) within both systems 
• identify linear units for perimeter, square
units for area, and cubic units for volume 
• perimeter • area • volume • capacity • square
units • cubic units • dimensions 
• Compare the perimeter and area of a square with
3½" sides. What is the volume of a cube with the same dimensions? 

8.M.2.1.4 Given the formulas, find the
circumference, perimeter, or area of triangles, circles, and quadrilaterals, and the volume and surface area of rectangular prisms. CL: C 
• Calculate the circumference and area of circles
given formulas • Calculate perimeter and area of triangles and quadrilaterals given formulas • Calculate the volume and surface area of rectangular prisms given formulas 
• select and apply formulas to determine
circumference or area of circles given either diameter or radius • produce answers in terms of pi and using approximations of pi • select and apply formulas for area and perimeter of triangles and quadrilaterals • combine formulas to solve composite area problems • select and apply formulas for surface area and volume of rectangular prisms 
• radius • diameter • circumference • in terms of
pi • quadrilateral • base • height (altitude) • rhombus • trapezoid • parallelogram • prism • lateral area • surface area 
• Use the formula C=πd or C=2πr to find the circumference of a circle with a radius of 3.2 cm. Leave your answer in terms of pi. • Use the formula A=½bh to find the area of a triangle with a height of 7 inches and a base of 12 inches. • Use the formula V=lwh to find the volume of a rectangular prism that is 2 cm x 3 cm x 5cm. 

8.M.2.1.5 Convert units of measurement within
each system in problem solving situations . CL: C 
• Convert units of measurement within each system
in problem solving situations 
• examine units of measure to determine agreement • determine appropriate unit to use • convert measurments 
• see 8.M.2.1.1  • Sal has a garden that is 5 yards by 8½ feet. He
wants to put a fence around it. How many feet of fence does he need to buy? 

8.M.2.1.6 Solve problems involving area of
circles and the perimeter and area of rectangles and triangles.
CL: C 
• Solve problems involving area of circles and
the perimeter and area of rectangles and triangles. 
• apply concepts of area and perimeter to solve
real world problems 
• Kendall needs to paint this basketball key
which is made up of a rectangle and a semicircle. The length of the rectangle is 18 feet and the width is 12 feet. What is the area of the space that needs to be painted


8.M.2.1.7 Use appropriate vocabulary and
notations. CL: Calc: Content Limit: Assessed in the classroom, not on the ISAT. 
• Use appropriate vocabulary and notations  • determine appropriate labeling of perimeter,
area and
volume • communicate using correct mathematical terminology 

Goal 2.2: Apply the concepts of rates, ratios, and proportions. 
8.M.2.2.1 Use rates, proportions,
ratios, and map scales in problemsolving situations. CL: C 
• Use rates, proportions, ratios, and
map scales in problemsolving situations. 
• relate data as rates, ratios, and
proportions • use proportions to solve problems involving scale • convert units of measurement as necessary 
• proportion • ratio • scale drawing • unit rate  • During a 7.5 hour drive, a car's
odometer (milage indicator) starts at 18,560 miles and ends at 18,980 miles. What is the car's rate of travel? 
8.M.2.2.2 Determine unit rates in realworld
situations. CL: C 
• Determine unit rates in realworld situations  • write and use unit rates to solve problems  • unit rate  • A 32 ounce container of yogurt costs $2.69. An
8 ounce container of yogurt cost $0.75. Find the unit costs of each container. Which is the better buy? 

Goal 2.3: Apply dimensional analysis.  8.M.2.3.1 Illustrate the
interrelationship of measurement units through dimensional analysis conversions. CL: C, D 
• Demonstrate the relationship
between measurement units through dimensional analysis conversions 
• identify common unit conversions • use appropriate conversion ratios to relate equivalent measurement units 
• conversion ratio (factor)  • Use dimensional analysis to convert
9 kilometers to meters. • Use the correct conversion factor to convert 70 ounces to pounds. 
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