Boundary Builders Teacher Guide
A comprehensive teacher facilitation guide for a Grade 3 Tier 2 intervention on perimeter. It outlines a Concrete-Representational-Abstract (CRA) approach using string, geoboards, and missing-side problem solving, including specific prompting scripts and progress monitoring look-fors.
Perimeter Power Slides
Visual presentation for the Perimeter lesson, defining the concept, demonstrating addition strategies, and walking through a missing-side real-world problem. Uses large fonts and clear visuals suitable for small group instruction.
Fence Finder Activity
A scaffolded measurement activity where students use string and rulers to physically trace the perimeter of various shapes. This concrete exploration builds foundational understanding before moving to calculation-based methods.
Geoboard Blueprints Task Cards
A set of task cards for use with geoboards. Students build specific polygons based on side lengths or total perimeter, reinforcing the relationship between unit segments and total distance around a shape.
Perimeter Patrol Check
A progress monitoring assessment for Tier 2 students. Includes basic perimeter calculation, finding a missing side length with a scaffolded two-step process, and a real-world word problem involving a square.
Boundary Builders Answer Key
Answer key for all lesson materials, providing specific calculations and common misconception alerts for the teacher.
