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### Looking Back and Moving Forward

Pre-K-2

This final lesson of the unit reviews the work of the previous lessons through a variety of activity stations, one of which involves using an interactive graphing tool. Students model with buttons and record addition and subtraction.### Measuring with Our Foot

Pre-K-2

Students measure the same distances as in the previous lesson using an outline cutout of their own foot. This enables students to practice using nonstandard units and to compare the measurement totals using their feet and the teacher’s foot.### What’s Next?

Pre-K-2, 3-5

In this lesson, students make patterns with objects, read patterns and find patterns in the environment. They should be encouraged to classify patterns by type (i.e. AAB, ABC). They continue learning about patterns by extending a given pattern, identifying missing elements in a pattern, and recording a pattern.### National Population Projections

3-5

In this activity, students examine the United States Census Bureau Web site to investigate population projections from 1990-2100. Using the five provided pyramids, students analyze the data to determine how the population is distributed over time, and explain what factors might contribute to these trends.

### State Population Projections

3-5

In this activity, students examine the United States Census Bureau Web site to investigate projections of the total population of states from 1995-2025. Using the provided data, students will analyze statistics from five states of their choice, develop specific research questions using the data, and create three graphs to compare and contrast the information.

### High Temperature

3-5

In this lesson, students complete a chart by adding or subtracting from a given value, use graphs to compare two categories of information, and identify number patterns.### Every Beat Of Your Heart

3-5

This activity involves taking a pulse, collecting and interpreting data, making predictions, and drawing conclusions. Its focus is the collection and analysis of data.### Maintaining the Balance

3-5

In this lesson for grades 3‑5, students participate in activities in
which they focus on patterns and relations that can be developed from
the exploration of balance, mass, length of the mass arm, and the
position of the fulcrum. The focus of this lesson is determining the
position necessary to balance uneven objects and the effect on balance
of moving the fulcrum.### Finding the Balance

6-8

In this lesson for grades 6‑8, students participate in activities in
which they focus on patterns and relations that can be developed from
the exploration of balance, mass, length of the mass arm, and the
position of the fulcrum. The focus of this lesson is the relationship
between the length of the arm and the mass of the objects.### A Brownie Bake

3-5

Students determine the amount of each ingredient needed to make brownies, and then they figure out how to divide the brownies evenly among their classmates. This lesson helps students reinforce their measurement skills in a practical situation.