Build a simple outdoor weather station: a plastic bottle cut in half for a rain gauge, a ribbon on a stick for wind direction. Record observations daily for a week. Predict tomorrow's weather based on today's readings.

What you need

plastic bottle
ruler
ribbon or strip of fabric on a stick
notebook

How to do it

1"We're going to build our own weather station — starting with this bottle." Cut it in half and invert the top into the bottom with a ruler taped inside to make a rain gauge.
2Tie a ribbon to a stick and plant it outside. This shows wind direction.
3Record daily at the same time: date, rainfall in millimetres, wind direction.
4After a week, ask: does wind direction predict rain here? Look for the pattern.

Variations

If they lose interest in the build: finish the rain gauge yourself and just ask them to check it each morning — being the one who reads the number is enough of a job to keep them in.
Frame the daily check as closing the station: "today's reading is in, station's closed till tomorrow" ends each session without it feeling unfinished.

💡 Parent tip

The revelation at the end of a week. 'every time the wind came from the west it rained'. Is the kind of insight children remember for years. This is a week-long project, not a quick fix — if things are already heated right now, use a physical/sensory reset instead, like Puddle Ecosystem or Stone Balancing.