Objective

Use the notches (scribe lines) on a speed square to draw consistent, parallel lines from the edge of a board. This builds layout accuracy and confidence in using hand tools.

Materials Needed

• Speed square with scribe notches

• Pencil or carpenter’s pencil

• 2x4 or flat board (at least 24 long)

• Optional: Ruler or tape measure for verification

Instructions

1. Place the fence of the speed square snug against the long edge of the board.

2. Insert the pencil into one of the scribe notches (e.g., 1 mark).

3. Slide the square along the edge while holding the pencil steady.

4. This creates a parallel line exactly 1 from the boards edge.

5. Repeat for at least two more distances (e.g., 3/4, 1-1/4).

6. Check if your lines are straight and evenly spaced.

Challenge Goal

Draw at least 3 straight, evenly spaced lines along the entire board using different scribe notch distances.

Assessment Rubric

Score /20

Optional Extension

Time Challenge: How many accurate lines can you draw in 5 minutes?