Develop a model to describe that matter is made of particles too small to be seen.
In 3rd grade, students ask questions and conduct experiments to explore the world around them. In this unit, students unpack the phenomena of tiny particles called atoms that make up all matter in the universe. This page showcases key parts of the first lesson in this unit.
In this unit, students use the scientific process to analyze Earth’s place in the solar system. They begin by modeling how matter is made up of tiny particles called atoms, and changes state when heat is added or removed. This page provides an overview of lesson 1B in which students explore the science phenomena of how heat affects matter.
In this lesson, students model the solar system and analyze Earth’s place in the system as well as how the force of gravity causes the planets to move around the sun in predictable, regular paths. This page serves to highlight the key components of this lesson.
In this unit, students are introduced to the scientific process as they analyze matter in the universe and Earth’s place in the solar system. For the first lesson in this unit, they conduct an experiment to compare the masses of two different substances, analyzing how matter is never created or destroyed. Students also discuss how all matter in the universe is made up of different combinations of atoms formed from chemical reactions. This page highlights key parts of this lesson.
In this unit, students continue to explore science phenomena related to energy, focusing on how energy is transferred in circuits and can do work, such as spinning a motor. Students begin with this lesson on exploring the basic phenomena of direct current energy flowing through parts of a simple and series circuit.
In this unit, students focus on the science phenomena of electric and magnetic forces. In this lesson, students build on their knowledge of forces by exploring electric forces. They analyze how materials can become either positively or negatively charged, and then use an electroscope to explore how opposite charges are pulled toward one another and like charges are pushed away from one another.
In this unit, students focus on the science phenomena of sound and hearing. Students begin with this lesson that has them exploring how sound causes matter to vibrate and how it moves differently through solids and liquids. This page highlights each component of this lesson.
In this unit, students discuss the science phenomena of how matter has different properties depending on the number and kind of atoms that make it up. In this lesson, they observe how forces act on matter, focusing on how unbalanced forces cause objects to move. This page provides a high-level extract of this lesson.
In this unit, students study the processes that shape Earth’s surface, focusing on the formation of minerals (such as diamonds) and rocks. In this lesson, they explore the phenomena exhibited in the properties of rocks and minerals to figure out how the properties of different minerals are a tool to identify them. This page is a high-level overview of this lesson.
In this unit, students continue to explore forces and energy, focusing on the science phenomenon of how electrical energy can be transferred from one place to another to do work. In this lesson, students build series and parallel circuits, measuring the amount of current that moves through each circuit with one and two light bulbs. This page highlights some components of that lesson.
In this unit, students build on their exploration of how energy and matter interact with a focus on science phenomena related to sound. In this lesson, students investigate how some materials absorb sound while others reflect it. This page is a high-level extract of this lesson.
In this unit, students focus on how sound energy is transferred from one place to another in waves. In this engineering lesson, students apply what they have learned about sound energy to design a sound absorbing wall. This page highlights each component of this lesson.
