Aligned Resources

South Carolina Academic Standards for Mathematics
3rd Grade
Measurement
The student will demonstrate through the mathematical processes an understanding of length, time, weight, and liquid volume measurements; the relationships between systems of measure; accurate, efficient, and generalizable methods of determining the perim

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Lessons (4)

Clock Arithmetic and Cryptography

Introduces students to modular (clock) arithmetic and how modular arithmetic can be used to encode messages using simple shift, multiple and affine ciphers.

Audiences: Grades 6-8, Grades 9-12

Primary Subjects: Algebra, Discrete, Number and Operations

Related Topics: addition, affine cipher, arithmetic, cipher, cryptography, decipher, division, encrypt, factors, inverse, modular, multiples, multiplication, remainders, shift cipher, subtraction, time

Estimation (elementary)

Introduces students to making estimations.

Audiences: Grades 3-5

Primary Subjects: Number and Operations

Related Topics: addition, area, arithmetic, comparing, counting, division, estimation, length, multiplication, percentages, percents, scale, subtraction

Length, Perimeter, and Area

Introduces students to length, perimeter and area.

Audiences: Grades 3-5, Grades 6-8

Primary Subjects: Geometry

Related Topics: acute, addition, area, arithmetic, cartesian coordinate, coordinate plane, dimension, distance, geometry, length, multiplication, obtuse, perimeter, planes, polygon, pythagorean theorem, rectangles, subtraction, triangle, width

Perimeter (elementary)

Students learn about perimeter and the units used to measure perimeter using a variety of materials including their hands, feet, rulers, and computer applets.

Audiences: Grades 3-5

Primary Subjects: Geometry

Related Topics: arithmetic, geometry, length, perimeter, polygon, rectangles, right angle, scale, squares

Activities (2)

Screenshot of Clock Wise
Clock Wise

Practice reading a clock, input times for the clock to display, or let the clock generate random times for you to read. Choose from three difficulty levels. Clock Wise is one of the Interactivate assessment explorers.

Audiences: Grades 3-5

Primary Subjects: Geometry, Science

Related Topics: assessment, elapsed time, time

Screenshot of Comparison Estimator
Comparison Estimator

Compare two sets of objects, using estimation to determine which is greater. Estimate a number of objects, the length of a line, or the area of a shape. Parameter: error tolerance. Comparison Estimator is one of the Interactivate assessment explorers.

Audiences: Grades 3-5, Grades 6-8, Grades 9-12

Primary Subjects: Number and Operations

Related Topics: area, assessment, comparing, counting, estimation, length, scale