A step-by-step instruction guide and worksheet for students to create their sand timer.

Students will assemble some recycled materials to create and calibrate a sand timer with scaled increments.

A worksheet is included to guide the activity and provide some opportunities for reflection and analysis.

It is advised that adults complete steps 1 and 2 of the instructions, ahead of time if possible.

Print one worksheet page per student, choose to print the instructions page or display on a screen in the classroom for all students to refer to when completing the activity.