In this clip, Marilyn Fetter describes the number sense concepts that students need to understand before they can compare numbers that are more than, less than, or equal to each other.

TEKS 3.10‑01 Number line

In this clip, the teacher demonstrates the concept of positive and negative integers and integer addition, using thermometer and number lines.

TEKS 3.10‑02 Number line

In this clip, students solve integer problems using number lines and a thermometer.

TEKS 3.10‑03 Number line

In this clip, the teacher demonstrates concept of positive and negative integers and integer addition using vertical and horizontal number lines.

TEKS 3.1B Place value

In this clip, Marilyn Fetter illustrates place value models that students should use as they work toward recognizing and comparing numbers