This resource is a remix from Illustrative Mathematics (https://goopenva.org/courses/3-md-how-heavy). This resource encourages student collaboration and allows students to have a mathematical dialogue as express their understanding of units of measure. Teachers can use objects found around the house to demonstrate mathematics in the real world. I like how this resource adds flexibility in instruction, as it allows teachers to creatively add diverse manipulatives or real-life items on the balance scale. This activity scaffolds the learning process allowing students an opportunity to experience active hands-on learning to strengthen their understanding of mathematical concepts, which provides a diverse learning experience. This resource is a valuable part of building background when introducing units of measure or equations in the early elementary years of mathematics education as it provides students a concrete example of building an equation with concrete objects.  Suggested Modification - A student recording sheet with illustrations has been added to the resource to allow all different types of learner to learn from a concrete idea to strengthen conceptual learning about building an equation. 

In an effort to support school librarians, the attached documents connect the Virginia standards for digital learning with the National School Library Standards.  

What is the Essential Understanding(s)/Big Ideas that are applicable to this lesson and refer to VA SOL and Framework if applicable?ES.2 The student will demonstrate an understanding of the nature of science and scientific reasoning and logic. Key concepts include b) evidence is required to evaluate hypotheses and explanations; c) observation and logic are essential for reaching a conclusion;What is the essential objective in this lesson?To help these students better understand/identify necessary information that they may need while doing research projects or for this course their final project.