Construct an evidence-based account of how an object made of a small set of pieces (blocks, snap

 Expanded Standard header image

Disciplinary Core Idea

PS1: Matter and Its Interactions

Standard Text and Component Idea

Explanation and Support of Standard

Crosscutting Concept

Science and Engineering Practice

K.PS1.3 Construct an evidence-based account of how an object made of a small set of pieces (blocks, snap cubes) can be disassembled and made into a new object.

Component Idea:

A. Structure and Properties of Matter


The objective of this standard is to begin to understand the idea that with a limited number of building materials, a large variety of things can be built. By third grade, students will transpose this concept to the idea that all matter is made up of smaller, invisible particles in a way that is similar to assembling a larger object from smaller parts. While this standard alludes to design tasks, this connection to later scientific conceptual understanding is significant.

Students can use a set amount of building bricks or other similar pieces to build multiple objects, recognizing that the same number of bricks can be interconnected in multiple ways.

The concrete science experiences of constructing and deconstructing parts of larger objects to make something new reinforce more abstract math skills used in K.OA.A.3 and utilized in later addition and subtraction strategies for “making ten.”

Energy and Matter

Students understand that objects can be deconstructed and reassembled in the same or different ways to form a foundation for understanding transformations of energy and matter.

Constructing explanations and designing solutions

Students design and/or build a device that solves a specific, given problem and evaluate competing solutions.