Question: What other lessons did you like?

And the winner is… (2 comments)

How many months of the year have 30 days? (It's a riddle :)) (4 comments)

if you shot a squirt of water to the sun would it become a black hole & if water (with more mass than the sun ) hit the (1 comment)

What other lessons did you like? (1 comment)

How your work can help people? (2 comments)