You will find comprehensive activities on this Smartboard file to help your students understand the function and major parts of the skeletal system. It includes:
overview of major organs
video link on function
lab 'The bony challenge'
method to collect data via survey
how to make analytical statements about data
All that is needed is paper for your students to take notes on & blank paper, tape and paper plate for each lab group. Base ten 100 flats work great as weights for the lab.
This Smartboard file can easily be used by your substitute teacher.