As part of our Human Organ System study in Science, we've been investigating the skeleton. The children became fascinated with bone marrow and I've followed their lead and devised experiments and hands-on activities to learn more about bone marrow and bone health.
Yesterday the students created models of bones using white salt dough (for the compact bone), thin dish-washing sponge (for the cancellous or spongy bone), and salt dough coloured with red food colouring for the bone marrow.
The children made diagrams of bones last week and this helped them create authentic models. It cost approximately $8.00 for twenty-nine children to make these models. They'll mount them on reused styrofoam trays next week and label the parts next with stickers and yarn. I think I would remember the parts of a bone better if I actually made one, versus filling out a worksheet. 
