This video uses many examples and pictures to show students how to compare and order three objects by length. [3:49]

Sal uses different units, standard and non-standard, to measure the same object. Includes a video, transcript, and question and answer section. [2:53]

Watch how to measure an object with same-size length units that span it with no gaps or overlaps. Includes a video, transcript, and question and answer section. [4:07]

Sal orders 3 objects by length and compares the lengths of 2 objects indirectly by using a third object. Includes a video, transcript, and question and answer section. [2:36]

Sal demonstrates how to use a ruler while measuring various objects in centimeters and meters. Includes a video, transcript, and question and answer section. [4:39]

Sal uses a ruler to compare the lengths of different objects. Includes a video, transcript, and question and answer section. [3:06]

In this video, students are shown how to use a ruler to measure lines and objects in centimeters. They are also shown how to draw a line of a given length. [4:41]

This lesson demonstrates how to measure length to a whole or half-inch using a ruler and how to measure and draw lines with a ruler. [5:50]

Watch this tutorial to see how to use a ruler to measure an object in millimeters. [5:51]

View this tutorial to see how to use a ruler to measure objects in centimeters. [5:27]

In this video lesson, Sal uses different units to measure the same object, centimeters and rectangles.

This video gives visual techniques for ordering three objects from the shortest to the longest. [3:03]

Learn about comparing weights with the Odd Squad. Olive and Otto are curious about what is inside Ms. O's briefcase and hope to guess what it is from its weight. They use a seesaw for a scale and common objects as weights for comparison.

Oscar uses a chart to explain similarities and differences when comparing a Tiggle and a Taggle.

In this video from Odd Squad, Olive and Otto are still trapped in a comic book and must get to page 30 using only the numbers 1 and 3.

Demonstrates how to measure the height of a statue head using nonstandard units. [4:07]

Sal orders three objects by length, and compares the lengths of two objects indirectly by using a third object. [2:37]