Counting test online (in Finnish!)

Heureka's free online test lets you test your counting skills. Note! The test is in Finnish.

Winter holiday at Heureka 2026

Experience the best moments of your winter holiday at Heureka – interactive exhibitions, a planetarium and experiences that will inspire people of all ages.

Finland's most curious class

Finland's most curious class's 2026 have been chosen. The winners are 3C from Helsingin Suomalainen Yhteiskoulu and 8A from Noormarkun yhtenäiskoulu.

Winter tips for visiting Heureka

The most fun and interesting winter day program is a trip to Heureka! We have interesting and exciting programs for all ages.

Heureka's winter holiday camps 2027

Note! The camps are in Finnish. Are you looking for a winter holiday camp for your child in the Helsinki Metropolitan Area? Heureka is organizing two-day science camps for curious primary school children in week 8. 

Christmas Holidays at Heureka

Spend a fun Christmas holiday at Heureka! We offer fun and insightful activities for the whole family: exhibitions, experiments and experiences. There's plenty to do for the whole day!

Gift ticket to Heureka

Give an experience as a Christmas gift - a gift card to Heureka is a joyful gift for a lover of science and culture. The ticket is valid for 12 months. Buy a gift card in the online store!

Christmas gift ideas 2025 - best tips for men, ...

Looking for the perfect Christmas gifts? Find inspiring Christmas gift ideas for men, women and children. Order easily online from the Heureka Shop selection.

Photographic Memory Test online

Note! The test in in Finnish. Take Heureka's free and fun photo memory test online. Challenge your visual memory, exercise your brain, and find out how accurately you remember the details of what you see.

Hearing test

As we age, our hearing deteriorates. Many people only realize this when they notice that they can no longer hear the chirping of crickets in the summer. Children can hear sounds with frequencies up to 20 kilohertz, but few 18-year-olds can hear sounds above 17.5 kHz. Why don't we find...

Astronaut Test

The astronaut profession is one of the most fascinating, but also the most challenging. That's why the astronaut recruitment process is also one of the most demanding, if not the most demanding. Take Heureka's playful astronaut test and find out if you could be an astronaut. The test is in...

Eläköön leikki -oppimateriaali

1-6 luokat

Tehtäviä voi käyttää yksittäisinä tai tehtävistä voi koostaa laajemman kokonaisuuden. Tehtävät soveltuvat käytettäväksi myös ilman Heureka-käyntiä.