Sinking and floating

It was a lovely afternoon so we spent it out in the garden, our bulb planting lead to watering..

Which lead to filling buckets with water. Which lead to a sink or float experiment. The 3 year old I was looking after wanted to know why a toy frog was staying on top of the water so we talked about how and why some things float and some things sink and found lots of things around the garden to experiment with: 

A big pine cone:

A toy car:

And lots more. Lots of fun and lots of learning!