
Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects.
3.MD.A.1 Tell and write time to the nearest minute and measure time
intervals in minutes. Solve word problems involving addition and
subtraction of time intervals in minutes, e.g., by representing the
problem on a number line diagram.
Sample Activity:
Word Problems: Time Intervals
Also included in 3rd Grade Math Centers
** Time Barrier Game (ver. 3)
** Time Match (ver. 5)
** Time Bump (ver. 4)
3.MD.A.2 Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve onestep word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.
Sample Activities:
Estimating Weight
More or Less than a Liter?
Also included in 3rd Grade Math Centers
** Weigh it Twice
** Marble Grab
** Measuring One Liter
** Capacity Lineup
** Word Problems: Volume and Mass
Represent and interpret data
3.MD.B.3 Draw a scaled picture graph and a scaled bar graph to
represent a data set with several categories. Solve oneand two step
“how many more” and “how many less” problems using information presented
in scaled bar graphs. For example, draw a bar graph in which each
square in the bar graph might represent 5 pets.
Sample Activity:
Represent and Interpret Data
Also included in 3rd Grade Math Centers
** Graphing M&M's
** Gummy Bear Graph
** Paper Ball Throw
** Jake's Survey
3.MD.B.4 Generate measurement data by measuring lengths using rulers
marked with halves and fourths of an inch. Show data by making a line
plot, where the horizontal scale is marked off in appropriate units
whole numbers, halves, or quarters.
Sample Activity:
Measure to the Nearest HalfInch
Also included in 3rd Grade Math Centers
** Measure to the Nearest Quarter Inch
** Squid Eyes!
** Measuring Strips Line Plot
** Measuring Names Line Plot (ver. 1)
** Measuring Names Line Plot (ver. 2)
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
3.MD.C.5 Recognize area as an attribute of plane figures and understand concepts of area measurement.
a. A square with side length 1 unit, called a “unit square”, is said to have “one square unit” of area, and can be used to measure area.
Sample Activity:
Square Units
Also included in 3rd Grade Math Centers
** Square Meters
b. A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.
Sample Activities:
Area on the Geoboard
Find the Area (N.B. When printing this activity you may need to specify no page scaling so that the exact size is maintained. Some printers
by default print pages at the setting 'Shrink to Fit'. Ensure that your printer is set to print at 100%.)
3.MD.C.6 Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
Sample Activity:
Rectangles with Color Tiles
Also included in 3rd Grade Math Centers
** Cover Your Notebook
** Measuring Objects in Square Centimeters
** Area Compare
3.MD.C.7 Relate area to the operations of multiplication and addition.
a. Find the area of a rectangle with wholenumber side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.
Sample Activity:
Find the Area of a Rectangle
Also included in 3rd Grade Math Centers
** Complete the Rectangle (ver. 2)
b. Multiply side lengths to find areas of rectangles with wholenumber side lengths in the context of solving real world and mathematical problems, and represent wholenumber products as rectangular areas in mathematical reasoning.
c. Use tiling to show in a concrete case that the area of a rectangle
with wholenumber side lengths a and b + c is the sum of axb and axc.
Use area models to represent the distributive property in mathematical
reasoning.
Sample Activity:
Jack's Rectangles
Also included in 3rd Grade Math Centers
** Build Rectangles of Two Colors
d. Recognize area as additive. Find areas of rectilinear figures by
decomposing them into nonoverlapping rectangles and adding the areas of
the nonoverlapping parts, applying this technique to solve real world
problems.
Sample Activities:
Find Areas of Rectilinear Figures (ver. 1)
Design a Flower Bed
Also included in 3rd Grade Math Centers
** Find Areas of Rectilinear Figures (ver. 2)
** Three Rectangles
Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures
3.MD.D.8 Solve real world and mathematical problems involving
perimeters of polygons, including finding the perimeter given the side
lengths, finding an unknown side length, and exhibiting rectangles with
the same perimeter and different areas or with the same area and
different perimeters.
Sample Activities:
Squares on a Geoboard
Rectangular Robot
Also included in 3rd Grade Math Centers
** Measuring Perimeter
** Perimeter on the Geoboard
** Perimeter with Color Tiles
** Design a Rabbit Enclosure
** The Perimeter Stays the Same
** The Area Stays the Same
** Word Problems: Perimeter