Display the class number line (0–130) where students can see and reach it with a pointer.
Attach a desk number line (0–100) to each student’s desk to use throughout the year.
Display the Math Practices page where all students can see it.
Have the following tools readily available for the Daily Practice and Problems items in this unit.
- You and your students will need:
connecting cubes
square-inch tiles
200 Chart (Student Activity Book) Reference
Addition Strategies Menu (Student Activity Book) Reference
Subtraction Strategies Menu (Student Activity Book) Reference
12-inch rulers
individual clocks
number lines
coin jars and coins from Unit 1 Lesson 1
- You will also need:
Centimeter Grid Paper
(Teacher Guide)
demonstration clock
| LESSON | SESSIONS | DESCRIPTION | SUPPLIES |
|---|---|---|---|
LESSON 1Counting Kids |
2–3 | In the Adventure Book story, “Armadillo Families,” Professor Robinson and his daughter Betty study the number of pups in armadillo families in the Brazilian rain forest, setting the context for students to survey their classmates about the number of children in the families of students in their class. Students then analyze their survey data represented in a line plot and bar graph. |
|
LESSON 2Rule Machines |
2 | Students explore different ways for doubling and halving a number. Students learn to apply various rules to input numbers to generate output numbers and look for number patterns to determine the rule. Students continue to explore patterns in rule machines by playing the game Guess My Rule. |
|
LESSON 3Gzorp |
2–3 | This lesson continues to develop the concepts in Lesson 2 Rule Machines. Student examine geometric patterns to explore doubling and other functions, such as adding a constant. |
|
LESSON 4Meet Mr. Origin |
1–2 | Students use the manipulative Mr. Origin to describe the location of objects with directional descriptors: right, left, front, and back. They first play “Mr. Origin Says,” a variation of the game “Simon Says” in which they position Mr. Origin relative to various classroom objects. Students then describe the location of objects along the horizontal axis by measuring the distance and describing the direction they are from the origin or from each other. |
|
LESSON 5Using Coordinate Maps |
1–2 | Students read an Adventure Book story in which Betty and her father travel to the Amazon River to map the location of dens of the giant river otter. Students will then use Betty’s map and journal to solve problems about the locations of the giant river otter dens. |
|
LESSON 6Mapping Rain Forest Trails |
3 | Student groups create Rain Forest Trails models using two perpendicular axes with Mr. Origin at the origin. The groups exchange models and use direction and distance to describe the locations of animals plotted along the axes on the models. Students create maps of the models and compare the two representations. Finally, they use the maps and data tables to solve problems involving length. |
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