Video tutorials for schoolchildren

Household chickens breed

Breed pigeons

The swamp. What is the swamp

Experiments in Chemistry. Getting oxygen from potassium permanganate

Experiments in chemistry. Reaction of a silver mirror

Experiments in chemistry. Ethylene production and experiments with it

Experiments in chemistry. Color reactions of the protein: biuret; xanthoprotein

Experiments in Chemistry. A method for producing and collecting hydrogen, the hydrogen purity check

Experiments in chemistry. Flame coloration with alkali and alkaline-earth metal salts

Experiments in chemistry. Saponification of fats

Plants of the Red Book of Russia: snowdrop folded, Siberian and Caucasian Kandik

Experiments in Chemistry. neutralization reaction

Experiments in physics. The principle of the rada

Experiments in Physics. The magnetic field of direct current

Experiments in Physics. The magnetic field of the solenoid

Experiments in Physics. Examples of electromagnetic induction

Profession "Gardener"

Experiments in physics. Collecting and scattering effects of a convex lens

Цефалофора (Цефалофора ароматная)

Experiments in Physics. Design and operation of the fork

Фидий

Experiments in Physics. Measurement of humidity by dew point

Experiments in Physics. Acoustic resonance

Fresh water. Other inhabitants of reservoirs

Experiments in Physics. Reflected infrared radiation

meadows Birds

Experiments in physics. The operating principle of an optical lens

General Biology. Breeding animals

Seed. The structure of the seed

Шапка Мономаха

Experiments in physics. Dependence of the current strength on the resistance of the circuit

National Nature Park and its device

General Biology. cytoplasmic inheritance

Experiments in chemistry. Oxidation of formaldehyde with copper (II) hydroxide

Experiments in physics. The device and action of a vacuum photocell

Огни Эльма

Experiments in Chemistry. Test compounds and solutions thereof on the electrical conductivity

Experiments in physics. The wavering body as a source of sound: the sound of a guitar string

Биология. Систематика растений. Часть 1. Отделы моховидные, плауновидные, хвощевидные и папоротники

Равелин

Часозвоня в Новгороде

General Biology. Selection at the cellular level

Улиты

Bud. Development of escape from the kidney, branching

Биология. Анатомия и морфология растений. Часть 1. Семя. Корень

Experiments in physics. Interference of waves

Медичи Екатерина

Experiments in Physics. The law of electromagnetic induction

Department of angiosperms. Family of Compositae. Characteristics of the family

Profession "Builder"

Як

Experiments in chemistry. The interaction of aluminum with acid and alkali

Experiments in Chemistry. The displacement of bromine with chlorine and iodine

Experiments in Physics. Isothermal process

Sheet. Detection of water evaporation by leaves

Experiments in physics. The law of refraction

Experiments in physics. The dependence of the current on the voltage in the circuit region

Seed. The importance of reserve substances for germination of seeds

Пещерный лев

Experiments in physics. Diffusion in liquids