Introduce your 2-year-old to different animals as a science activity. Children can learn about animals at the zoo or a pet shop. They can learn about the differences between animals, such as mammals, insects, reptiles and birds, by feeling them, seeing what they eat and how they move, and hearing the types of noises they make. Afterward, play with your 2-year-old imitating and making noises of the animals she was introduced to.
Introduce the human body parts as a science activity for your 2-year-old. Help him learn about where each part of the body is by singing songs such as "If Your Happy and You Know It." You can alter the lyrics so that there is an opportunity to introduce each body part. After introducing the different body parts, you can sit down and play with him, asking where each body part is and going into more detail about how many ears, fingers and toes he has.
You can teach your 2-year-old about where fruits and vegetables come from by taking her to a farm for pickings. Explain and show her how fruits and vegetables are grown. Show her how they look when they are just grown and when they are fully grown. Picking fruits and vegetables can be an enjoyable activity for a 2-year-old, and she can learn about the different textures and taste of certain foods by taking a bite of the appropriate pickings.
Let your 2-year-old learn about what is magnetic and what is not as a science activity. He will enjoy testing a variety of objects. Give your child a safe magnet toy, and gather together five items that are magnetic and five items that are not. Let him test each item over and over again. He'll soon learn which ones are magnetic and which ones aren't, and can also begin to notice common features on items that are magnetic.