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- Rote counting to 31
- Writes numerals to 10
- Counts objects to 20 with one-to-one correspondence
- Skip counts by tens
- Uses language to describe quantity and relationship (more, less, equal)
- Adds using manipulatives
- Understands the concept of 1/2
- Creates single variable patterns

- Identifies basic shapes in the environment
- Draws triangles and rectangles
- Demonstrates understanding of relative location (above, below, beside, etc.)
- Measures using non-standard units
- Uses comparative language
- Demonstrates awareness of time (before/after)

©1998 University Child Development School and Bonnie Campbell Hill. No part of the Continuum may be reproduced or used without written permission of University Child Development School. Continuum adapted by University Child Development School with permission from Bonnie Campbell Hill.

In this Math Vitamin, based on a talk given by a scientist studying guillemot bird population on Cooper Island, students are asked to design nesting boxes that are three, four and five-sided. Students are asked to build the shape on their Geoboard and to record the design.

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**Story:**Betty LOVED your ideas! After testing some out, George noticed that certain birds prefer different shaped nesting boxes.
He wants to observe the birds' behavior in three, four, and five-sided boxes.

How many different styles of three-sided boxes can you design? Four? Five? Record your blueprints as you complete your designs.

**Suggested manipulatives:**
Geoboards and rubber bands. You will also need Geoboard grid paper
and pencils so students can document their design ideas.

**Prep time:** 5-10 minutes to assemble the Geoboards and bands and copy Geoboard grid paper for kids to record their ideas.

**Classroom time:** Asking children to do their best work for each Math Vitamin assumes that some children will need a longer time than others. Ideally you
want to offer a block of time for Math Vitamin projects and have another task available (writing, free exploration, etc.) for those students
who finish work prior to their peers. For this project allow 20-45 minutes for students to work through all the steps.

**How to individualize/stretch:** Some students will build and explore three sided shapes while you help them count and
add vocabulary (triangles). For students needing a stretch, add the concept of area to this Math Vitamin. What four-sided shape
has the most area for the birds? Which five sided polygon has the largest/smallest area?