4 Cards Placed Partner Checked
Detective Name: ___________________________ Date: _______________
Mat 3 of 6
2D Polygon
Sides: 3 straight sides Corners: 3 vertices Angles: 3 interior angles
Find and place the 4 real-world triangle photo cards in the 3" × 3" slots below.
TRIANGLE ITEM #1 3" × 3" Card
Place Photo Card Here
Match the 3-sided wedge or sign
Card Name: ___________________________
TRIANGLE ITEM #2 3" × 3" Card
Place Photo Card Here
Match the 3-sided wedge or sign
Card Name: ___________________________
TRIANGLE ITEM #3 3" × 3" Card
Place Photo Card Here
Match the 3-sided wedge or sign
Card Name: ___________________________
TRIANGLE ITEM #4 3" × 3" Card
Place Photo Card Here
Match the 3-sided wedge or sign
Card Name: ___________________________
Detective Talk: Count the 3 sides and 3 sharp corners on each item! Can a triangle point up or down?
4 Cards Placed Partner Checked
Detective Name: ___________________________ Date: _______________
Mat 4 of 6
2D Quadrilateral
Sides: 4 straight sides (2 pairs equal) Corners: 4 right angles (90°) Rule: Opposite sides equal
Find and place the 4 real-world rectangle photo cards in the 3" × 3" slots below.
RECTANGLE ITEM #1 3" × 3" Card
Place Photo Card Here
Match the phone, bar, door, or book
Card Name: ___________________________
RECTANGLE ITEM #2 3" × 3" Card
Place Photo Card Here
Match the phone, bar, door, or book
Card Name: ___________________________
RECTANGLE ITEM #3 3" × 3" Card
Place Photo Card Here
Match the phone, bar, door, or book
Card Name: ___________________________
RECTANGLE ITEM #4 3" × 3" Card
Place Photo Card Here
Match the phone, bar, door, or book
Card Name: ___________________________
Detective Talk: How can you tell a rectangle from a square? (2 sides are longer than the other 2 sides!)
4 Cards Placed Partner Checked
Detective Name: ___________________________ Date: _______________
Mat 5 of 6
5-Pointed Star
Points: 5 radiating tips Valleys: 5 inner corners Rule: Pointed symmetry
Find and place the 4 real-world star photo cards in the 3" × 3" slots below.
STAR ITEM #1 3" × 3" Card
Place Photo Card Here
Match the 5-point star item
Card Name: ___________________________
STAR ITEM #2 3" × 3" Card
Place Photo Card Here
Match the 5-point star item
Card Name: ___________________________
STAR ITEM #3 3" × 3" Card
Place Photo Card Here
Match the 5-point star item
Card Name: ___________________________
STAR ITEM #4 3" × 3" Card
Place Photo Card Here
Match the 5-point star item
Card Name: ___________________________
Detective Talk: Point and count out loud all 5 tips on each star object! Do they all radiate from the center?
4 Cards Placed Partner Checked
Detective Name: ___________________________ Date: _______________
Mat 6 of 6
Cardioid Shape
Top: 2 rounded lobes & cleft Bottom: 1 tapered point Rule: Line of symmetry
Find and place the 4 real-world heart photo cards in the 3" × 3" slots below.
HEART ITEM #1 3" × 3" Card
Place Photo Card Here
Match the berry, leaf, cookie, or glasses
Card Name: ___________________________
HEART ITEM #2 3" × 3" Card
Place Photo Card Here
Match the berry, leaf, cookie, or glasses
Card Name: ___________________________
HEART ITEM #3 3" × 3" Card
Place Photo Card Here
Match the berry, leaf, cookie, or glasses
Card Name: ___________________________
HEART ITEM #4 3" × 3" Card
Place Photo Card Here
Match the berry, leaf, cookie, or glasses
Card Name: ___________________________
Detective Talk: Trace the two rounded curves at the top and the point at the bottom! Are both sides symmetrical?
4 Cards Placed Partner Checked
