Featured in PASCO’s Elementary School Science Teacher Guide

Elementary School Science Teacher Guide


Features 29 inquiry based labs designed for elementary students and coordinated with the standards for life, earth and physical sciences.

Conservation of Matter

Lab Summary

Use a force sensor to determine tat the weight of a whole object is the same as the sum of the weight of each part that makes up the whole object.


To understand this content, students:

  • Classify objects by weight (light objects versus heavy objects)
  • Use a force sensor to graph the weight of different objects.
  • Compare the wight of the whole flashlight to the weight of all the pieces of the flashlight.

Sensors / Equipment Used:

PASPORT Force Sensor


Designed to measure both pulling and pushing forces. Uses range from collisions to tug-of-war.

Materials Used:

Bag to attach to force sensor hook 
Objects of varying weights, 1 to 5 pounds such as a textbook, bottle of water, large box of crayons, hand weight, an orange, a hammer - 4
Flashlight (containing D batteries) 
Object made of parts, 1 to 5 pounds, such as a student backpack, a lunch box, a large bolt with a nut and washer attached, tool box
Projection system (for the teacher only) 

The Associated Bundle:

Elementary School Science Standard Sensor Bundle


This bundle contains the probeware needed to perform all 25 lab activities in the Elementary School Introductory Science Experiments.

Interface Required

This experiment may require software and an interface for data collection.