K.7.B

MathKindergarten

The Standard

compare two objects with a common measurable attribute to see which object has more of/less of the attribute and describe the difference

Texas Essential Knowledge and Skills for Mathematics

Teacher's field guide

What Students Need to Do: Students focus on one shared feature, such as length, height, weight, or capacity. They compare two objects and say how one differs from the other.
What Mastery Looks Like: Students compare two objects using the same feature and accurate comparison words. They can show their reasoning by aligning, lifting, filling, or placing the objects side by side.
Common Misconceptions: Students may compare different features, such as one object's height with another object's weight. They may assume taller objects are always heavier or fail to align objects at the same starting point.
How to Assess It: Give each student a pencil and a crayon. Ask, “Which is longer, and how can you show the difference?”

Lesson moves

Give pairs two classroom objects to align, lift, and fill, then describe which is longer, heavier, or holds more.
Show a tall empty bottle and a short full bottle, then ask, “Which is heavier, and what evidence would prove it?”
Play Compare and Claim: partners choose two object cards, name one shared feature, and earn a counter for a correct comparison.
Compare two lunch containers with linking cubes, then choose which container would hold more food and explain why.

Keep exploring

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