Moscow: Prosveshcheniye Publishers, 1981. — 52 p.
Day and night.
What time is it?
My day.
What they said.
Make your own clock.
At doctor Time's office.
How many days has a week.
How Many?
An Age problem.
Months and seasons.
How many monts has a year.
At doctor Time's office.
The Months.
How old are you, Daddy?
Round the year.
Tommy's Birthday.
The Planets.
Two Curious problems.
Eyes and nose on the weather.
Rhyming riddles.
Telescope.
Hygrometer.
Wind-Vane.
Weather Vane.
It's interesting to know why.
Do you know?
How far away is lightning?