Speed, mass, hot and cold
Answers are for parents and teachers.
1
A cyclist rides 60 km in 4 hours. Calculate the speed.
60 ÷ 4 = 15 km/h
2
Find the mass of 5 items at home (weigh them or read the package) and write it.
For example: flour 1 kg, sugar 500 g.
3
Find 3 things that float and 3 that sink at home (test in a bowl).
For example: floats — cork, wooden spoon; sinks — nail, stone, coin
4
List the heating and cooling devices at home.
Heating: stove, radiator, kettle; cooling: fridge, air-conditioner.