Aligned Resources

Virginia Standards of Learning
3rd Grade
Measurement
3.15 The student will tell time to the nearest five-minute interval and to the nearest minute, using analog and digital clocks.

Lessons  •  Activities  •  Show All

Lessons (1)

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

Activities (3)

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 Elapsed Time
Elapsed Time

Practice finding elapsed time given a starting time and an ending time. Elapsed Time is one of the Interactivate assessment explorers.

Audiences: Grades 3-5, Grades 6-8

Primary Subjects: Geometry, Science

Related Topics: addition, assessment, counting, elapsed time, subtraction, time

Screenshot of Elapsed Time Two
Elapsed Time Two

Given a starting time and elapsed time practice finding the ending time. Elapsed Time Two is one of the Interactivate assessment explorers.

Audiences: Grades 3-5, Grades 6-8

Primary Subjects: Geometry, Science

Related Topics: addition, assessment, counting, elapsed time, subtraction, time