Units of Study-Winter Trimester

Measurement, Time and Graphs
In this unit of study, students explore both customary and metric measurement and extend their measurement skills for liquid volume and mass. The concept of time is extended as students refine their ability to tell time to the nearest minute (on analog and digital clocks) and work with elapsed time. Students use knowledge of the four operations and models (such as number lines and line plots) to solve problems involving measurement and time. Students attend to precision while generating measurement data to the nearest 1/4 inch. After generating data, students construct various data displays while using appropriate tools precisely. These displays allow students to communicate and reason about their thinking for their choice of display, scale increments, and even their need for precision. The content of the unit is an opportunity for students to continue refining addition and subtraction skills as well as recently developed multiplication and division skills. 
Write Equations to Solve Word Problems
As second graders, students learned problem solving strategies within the context of addition and subtraction. During this unit, third graders develop perseverance and problem solving strategies by solving a variety of problem types within the context of all four operations. They use their prior knowledge of carrying out the four operations, inverse operations, reading problems, and properties to develop proficiency in solving one step and two step problems. Visual models and real world situations are used throughout the unit to illustrate important problem solving concepts. Critiquing the reasoning of others is elevated as students begin to compare their strategies to those of their peers in order to construct viable mathematical arugments.

Change: Earth's Materials
This unit of study focuses on changes in Earth's surface materials – particularly how rocks and soil can be broken down through the processes of weathering and erosion.

Living and Working in the City
Students learn about economic interdependence in a community. Economic interdependence includes the exchange of goods and services, providing government services through taxation, and economic decisions that individuals make.

Nonfiction: The Nuts and Bolts
During Nonfiction: The Nuts and Bolts unit of study, students use the organizational structures and text features to construct meaning from nonfiction text.  Students come to understand that not all ideas or features have equal importance. Students will use text features to locate information relevant to a given topic and to aid their understanding.
Uncovering the Main Idea and Supporting Details
During the Uncovering the Main Idea and Details unit of study, students use comprehension strategies (visualizing, inferring, summarizing, and synthesizing) to uncover main ideas and supporting details in a variety of texts.

Writing to Explain
During the Writing to Explain unit of study, 3rd graders write in a variety of forms to explain their thinking, knowledge, or understanding (see multiple forms above). Third graders are expected to state a main idea and group relevant details or facts. Students should be provided with choices of topics and forms through inquiry and interest when possible.  Planning and revision strategies allow students to explore writing processes as they consider their audience; however, not all pieces will go to the final publishing stage.
What is my Opinion and Why?
In this unit, “What is My Opinion and Why?” students identify the purpose, subject, audience, and form for writing their opinion. As they plan and draft, students focus on clearly stating their opinion and organizing their reasons, examples, or details.  They will create an organizational structure that lists reasons, yet lay the foundation for more sophisticated text structures in later grades. Students include language and vocabulary that clarifies their opinion as well as a concluding statement or section. Students are also expected to continue varying sentence beginnings and sentence types. See Unit Considerations for more information.