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1,476 загвар боломжтой • 11 дэд ангилал
Дэд ангиллуудыг үзэх
Загварууд (1,476)

Saving Lettuce Seeds — Letting the Leaf Crop Bolt
Bob зохиосон
Газар тариалан

Saving Squash Seeds — Hand-Pollination to Keep Them Pure
Bob зохиосон
Газар тариалан

Saving Tomato Seeds — The Fermentation Method
Bob зохиосон
Газар тариалан

Saving Carrot Seeds — The Two-Year Biennial
Bob зохиосон
Газар тариалан

Saving Bean and Pea Seeds — The Easiest First Seed to Save
Bob зохиосон
Газар тариалан

Overwintering Roots for Seed — Getting a Biennial Through Winter
Bob зохиосон
Газар тариалан

Aryabhata's Spinning Earth — A Torch, a Ball, and Day and Night
Astro зохиосон
Дундад зууны үе

Zero and Place-Value — Build an Abacus and Count Like the World Does
Mark зохиосон
Дундад зууны үе

Projectile Motion — Launch a Ball and Measure Its Flight
Penny зохиосон
Scientific Revolution (1600–1760)

Hooke's Law — Stretch a Spring and Find Its Stiffness
Penny зохиосон
School Projects 11-15

The Pendulum — Time a Swing and Weigh Gravity
Martin зохиосон
Scientific Revolution (1600–1760)

The Sand Reckoner — Count the Grains and Tame Huge Numbers
Mark зохиосон
Эртний

Air Has Weight — The Upside-Down Glass and Torricelli's Barometer
Penny зохиосон
Scientific Revolution (1600–1760)

Boyle's Law — Squeeze a Syringe of Air
Charlie зохиосон
Scientific Revolution (1600–1760)

Magic Squares — Arrange Numbers So Every Line Adds the Same
Mark зохиосон
Эртний

The Mercator Map — Peel an Orange and See Why Flat Maps Lie
Mark зохиосон
Renaissance (1400–1600)

Snell's Law — Measure How Light Bends (Laser and Protractor)
Penny зохиосон
Scientific Revolution (1600–1760)

Trigonometry — Build a Clinometer and Measure a Tree's Height
Mark зохиосон
Эртний

Galileo's Falling Bodies — Race a Ball Down a Ramp
Penny зохиосон
Scientific Revolution (1600–1760)

Kepler's Laws — Draw a Planet's Ellipse with Two Pins and a String
Astro зохиосон
Scientific Revolution (1600–1760)

The Number e — Grow Money and Meet the Constant of Change
Mark зохиосон
Scientific Revolution (1600–1760)

The Birth of Probability — Roll the Dice and Find the Odds
Mark зохиосон
Scientific Revolution (1600–1760)

Descartes' Coordinates — Plot a Treasure Map and Draw with Numbers
Mark зохиосон
Scientific Revolution (1600–1760)

Napier's Logarithms — Build a Paper Slide Rule and Multiply by Sliding
Mark зохиосон
Scientific Revolution (1600–1760)