Start over

Hello, dear friend!

Here is a gift from the Save the Planet program.
Inside is everything you need for self-recycling paper and getting a flower card.

Safety precautions

  • (Read this text with an adult from your home)

    When working with sandpaper, be careful, take care of the skin of your hands.

In your set

  1. Felt sheet
  2. Sponge
  3. Eight round filters
  4. Piece of sandpaper
  5. Test tube with clover seeds

You will also need:

1. Cup
2. Plate
3. Stack of books


  • 1
    Take the paper bag that contained the contents of your gift. Take off the color sticker. Tear the bag into pieces 3-5 cm in size. Place them in a cup and pour hot water from the tap.
  • 2
    After 15 minutes, you will see that the paper is wet, but not dissolved in water. The fact is that paper contains cellulose. Cellulose is the material from which the strong cell walls of plants are built. Cellulose doesn't dissolve in water, so you have to work hard to break it down.
  • 3
    Take a sheet of sandpaper. Form a wet lump from pieces of paper and rub it on sandpaper, like on a grater, into another plate *. Abundantly moisten the lump in water to make it easier to rub. You should get a homogeneous "porridge" of paper.

    *You can also use a blender to shred paper if you have one on hand.
  • 4
    Hooray, cellulose fibers are destroyed, you win! Place the paper "porridge" back into the cup, add the seeds from the test tube, add water if required ("porridge" should have the consistency of liquid sour cream) and mix thoroughly.
  • 5
    Now take a sheet of felt and fold it in half like a book. Put 2 round paper filters inside on one of the halves, and put a "porridge" of paper on top.
  • 6
    With a sponge, blot the "porridge" so that it is evenly distributed over the filter in a thin layer, but there are no holes anywhere. Continue blotting the "porridge" and squeezing the sponge until there is nothing left to squeeze.
  • 7
    Cover the resulting layer of paper with two more paper filters and cover with the second half of the felt sheet. Press down the resulting "sandwich" with something heavy, for example, a stack of books, and leave for 5 minutes.
  • 8
    Open the "sandwich" and carefully replace the wet paper filters with new dry ones. Assemble the "sandwich" back and leave it under the load for another 5 minutes.
  • 9
    Carefully separate the resulting paper from the filters and felt. Lay it on a horizontal surface in a warm and dry place for 4-6 hours until completely dry.
  • 10
    Cut out a free-form postcard from paper. Sign it and give it to one of your friends. If you plant such a postcard in the ground or place it in water, it will sprout clover.

For reference

  • Paper is made from the wood of trees, so many forests are cut down for its production, animals and birds suffer from this. A simple way to help nature is to turn in waste paper. At special processing plants, old paper is cleaned of glue and dirt, crushed and turned into a homogeneous mass, from which new sheets are then stamped. The same paper can be recycled up to 7 times, then the cellulose fibers that make up the paper become too short and unsuitable for production.

    Now you know not only why paper should be recycled, but also how to do it yourself at home!

Next science workshop in Barcelona

May 13, Saturday
scientific workshop for children 5-6, 7-10 and 11-13 years
We will understand the chemical and physical properties of food, create gummy bears, assemble our own devices for extracting odors, figure it out in food additives and create them in the laboratory, study the physical and chemical properties of familiar products, and even prepare rations for astronauts. Science has never tasted so good!
None of our programs are repeated. The schedule of the nearest programs you can see on the page Calendar ↗. And on the page about us ↗ you can see which programs we have already run.
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