Introduction: High Frequency Lego Dog Wistle
A reliable dog whistle made from only a few legos.
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Supplies
The legos in the picture.
Step 2: Put It Together
The pictures will show you how
Step 3: Use
To use lightly blow into the white lego piece. The long piece with holes is a handle.