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Material didáctico en Inglés, ideales para centros escolares o para realizar actividades en familia.
The classical instrument for measuring angles as used by sailors and discoverers. A sturdy kit with two unbreakable stainless steel mirrors and a sun filter.
This is a kit for a fully functional Newton reflecting telescope with Dobsonian mounting.
Kit for a classical armillary sphere, the standard instrument for observer-centred astronomy for over 2000 years.
Two lenses connected by a cardboard tube: it’s that simple to build a telescope!
Create over 40 fabulously festive cards, gifts and decorations
When studying solid geometry, there is no substitute for holding a model in your hands, and this fun but challenging book offers that very opportunity.
Create perfect pop-up and 3-D cards that tell Dad he's the greatest, wish Mom a happy birthday, and offer friends and family personalized keepsake greetings.
If you've got a box, you've got it made! With step-by-step instructions and hundreds of illustrations, this book can help kids transform a cardboard box into easy-to-make playthings—and teach them firsthand about recycling.
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