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A lecke a nagy Fermat-sejtés lényegét, történeti hátterét és az n = 3 esetre vonatkozó indirekt bizonyítás alapgondolatát foglalja össze.

A tananyag animációk segítségével szemlélteti a másodfokú egyenletek geometriai megoldásait, a „görög” gondolkodásmódot követve a matematika tanításában.

يساعدك هذا الدرس على فهم آلية السمع.

دليل المستخدم لسلسلة الدروس الرقمية "أنا أدرس في المنزل".

يعد توفير الطاقة مهمة للجميع لأن إستهلاك الطاقة البشرية يمكن أن يتجاوز قريباً حدود الكوكب.

تتحد الهالوجينات و المعادن لإنتاج البروميدات.

I bet you are not strong enough to blow the table tennis ball out of the funnel.

I bet I can inflate a garbage bag faster than you.

I bet I can inflate a balloon inside a plastic bottle.

I bet I can look into a blown-up balloon without deflating it.

I bet I can shrink an inflated balloon without letting air escape from it or even touching it.

I bet I can break a wooden skewer with one chop, even though only a few sheets of paper covers the part that is on the table.

I bet I can make a musical sound using a matchbox.

I bet if I cover a water-filled glass with a sheet of paper and I turn it upside down, water will not spill out.

I bet I can pierce an inflated balloon without bursting it by pushing a skewer right through it.

I bet I can send a bag airborne without throwing it upward.

I bet I can make a gun using a plastic tube and raw food materials.

I bet I can crush a plastic bottle with the help of a few litres of water.

I bet I can suck up your drink from your glass with this plastic bottle without squeezing it.

I bet I can move the coin covering the mouth of the bottle using only the warmth of my hands.