Interesting experiments on biology

How to create a blood cell model with your own hands? Interesting experiments on biology will certainly interest the child, if during work children are given the opportunity to do what they love most.

For example, many kids love to draw - it is easy to use during training.

Other kids love to conduct experiments and mess with different materials - and this can also be included in the developmental activity. The main thing is to build children's education in such a way that their interest in classes only increases each time, and the knowledge base expands and deepens.
blood cell model

model blood cells

Biology for children is always very interesting in general, because it is directly related to what excites every child: with plants, animals, and even with his own body. Many moments of the device of our body affect even adult people, and for children even elementary bases of anatomy are beyond reality.Therefore, the learning process is best done as clearly as possible, using the most simple, familiar objects, trying to explain complex things as simply as possible.

One of the topics that will interest any crumb is the composition of a drop of blood. All babies saw blood when they hurt their skin. Many children look at her very frightened: she is bright, her appearance is almost always associated with pain. As you know, most of all we fear what we do not know. Therefore, perhaps, having studied the structure of blood, having learned where its red color comes from and what functions it performs, the baby will be more comfortable with small scratches and cuts.

So, for the exercise, it will be useful:

  • Transparent container (for example, a glass jar) and small cups, bowls and spoons.
  • Red balls (glass decorative balls, large beads, red beans — whatever exists).
  • White small balls and larger oval white objects (white beans, beads, white lentils, remnants).
  • Water.
  • Paper sheet for rice Hania.
  • Pencils, felt-tip pens, paints and a brush are the things you like drawing the most.

Create a blood sample in a glass jar: pour small white and red there balls and several larger oval white objects.We explain to the child that:

Water is plasma, the liquid part of the blood in which its cells move.

The red balls are red blood cells, they contain a red protein that helps carry oxygen to all the cells of our body.

White small balls are platelets. They create a kind of cork when a blood vessel is damaged.

White large objects are leukocytes, they serve to protect our body from harmful invaders (bacteria and viruses).

 Materials for making the cell

Materials for making the cell

Blood cell model

Cell Model and blood

 Visual cell

Visual cell

Explain how the complete blood count is performed, for which they take a droplet from a finger: in a spoon we collect a random number of balls (this will be the test droplet of blood), pour it into a cup. We calculate how many improvised erythrocytes, leukocytes and platelets happened.We explain that, if there are not enough red blood cells, it means that a person has anemia, you need to undergo treatment. And if there are a lot of leukocytes, it means that “enemies have invaded the body”, you need to help him fight them. We allow the child to play with this material, depict the invasion of the infectious agent and the action of phagocyte cells.

We suggest drawing our blood drop on a large leaf. Denote the cells on it, paint the plasma in its usual color - yellow. We repeat all the new information that we learned during the lesson.

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