Chemistry is the study of matter. Our understanding of chemical processes thus depends on our ability to acquire accurate information about matter. Often, this information is quantitative, in the form of measurements. In this lab, you will be introduced to some common measuring devices, and learn how to use them to obtain correct measurements, each with correct precision. A metric ruler will be used to measure length in centimeters (cm).

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

Students learn about the concepts of accuracy and approximation as they pertain to robotics, gain insight into experimental accuracy, and learn how and when to estimate values that they measure. Students also explore sources of error stemming from the robot setup and rounding numbers.

This task is a refinement of ``Carbon 14 dating'' which focuses on accuracy. Because radioactive decay is an atomic process modeled by the laws of quantum mechanics, it is not possible to know with certainty when half of a given quantity of Carbon 14 atoms will decay. This type of question is very important in science and it also provides an opportunity to study the very subtle question of how errors behave when applying a function: in some cases the errors can be magnified while in others they are lessened.

This short video and interactive assessment activity is designed to teach fourth graders about multi-step addition of weights with compound units (metric units) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about adding compound units in years and months.

This short video and interactive assessment activity is designed to give fourth graders an overview of weight-based english-unit word problems.

This short video and interactive assessment activity is designed to give fifth graders an overview of measuring capacity (metric units).

This short video and interactive assessment activity is designed to give fourth graders an overview of measuring capacity (metric units).

This short video and interactive assessment activity is designed to teach fourth graders about solving multi-step weight problems with subtraction (metric units) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about using a scale and multi-step calculations to find weight in grams i.

This short video and interactive assessment activity is designed to give fifth graders an overview of addition and subtraction in kilograms and grams.

This short video and interactive assessment activity is designed to give fourth graders an overview of weight in metric units.

This short video and interactive assessment activity is designed to teach fourth graders about two-step subtraction of weights (english units) - word problems.

This short video and interactive assessment activity is designed to give fifth graders an overview of addition and subtraction of weights (metric units).

This short video and interactive assessment activity is designed to give fourth graders an overview of addition and subtraction of time.