
Types of Microscopes
Maya and Arjun look at a drop of pond water with Mrs. Patel and discover how simple and compound microscopes help us see a tiny world of microorganisms that is invisible to our eyes.
Durante la Feria de Ciencias, Lila y Jay descubren un sándwich olvidado cubierto de manchas borrosas e investigan el mundo invisible de las bacterias.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.

Maya and Arjun look at a drop of pond water with Mrs. Patel and discover how simple and compound microscopes help us see a tiny world of microorganisms that is invisible to our eyes.

In Grandma Rosa's sunny garden, two curious kids pull up a bean plant and discover tiny bumps on its roots—and learn how special bacteria help plants capture nitrogen from the air.

When a neighborhood pond turns bright green, two curious kids and Grandma June discover tiny algae, what causes algal blooms, and why too much algae can harm lake life.
Las bacterias son organismos vivos unicelulares diminutos. Millones de ellas caben en la punta de tu dedo. La mayoría son inofensivas y muchas son útiles, pero algunas pueden echar a perder la comida o enfermar a las personas. Las bacterias se reproducen por fisión binaria. Los antibióticos tratan infecciones bacterianas pero no funcionan contra virus. Podemos mantenernos sanos lavándonos las manos, refrigerando la comida, lavando los vegetales, cepillándonos y usando hilo dental, y tirando la comida echada a perder.
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