Sink or float

What’s your name?

Type it the same way each time, so your work stays together on any device. Your teacher can see your work.

This computer may be shared. Make sure your work goes to you.

Which class are you in?

Choose once; your teacher can change it later.

Sink or float

Find out what decides whether something sinks or floats, in a lab with a coach beside it.

Your teacher can see your answers and work here, and how long each part takes.