IN TRUST FOR THE NATION: PAINTINGS FROM NATIONAL TRUST HOUSES

This exhibition at the National Gallery, Trafalgar Square, London WC2, has an accompanying quizdrawing competition for children under 12. The best entries in each of four age groups will receive National Trust gifts as prizes. Details: 0171 839 3321.

NOVEMBER 29-JULY 11

BUILDING WITH SNAKES: THE PHYSICS OF LONG CHAIN MOLECULES

Shopping bags, spider silk, car bumpers, custard, washing-up bowls and climbing ropes are all made of polymers, the subject of this year’s Institute of Physics touring lecture for students aged 14 and above. Sponsored by the Engineering and Physical Sciences Research Council, it is being given by a team of physicists in more than 20 venues. Details: Catherine Wilson, 0171 235 6111.

NOVEMBER 29, JANUARY 24 AND MARCH 28

NUTRITION AND SCHOOL CHILDREN

Seminars organised by the National Dairy Council and National Association for Teachers of Home Economics and Technology in Cedar Court Hotel, Wakefield, Society of Chemical Industry, London, and Swallow Hotel, Peterborough respectively. It will explore how good nutrition can protect against ill health. Speakers include: Professor Neil Armstrong, Exeter University. Fee: Pounds 22.50. Details: Kelly Boughen, 0171 499 7822.