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Biology Middle Schools

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Ear and hearing, B17

16 feasible experiments Topics: • Oscillatory motion • Graphic representation of oscillatory motion • When we hear a sound • Why we hear sounds • Acoustic waves • How acoustic waves are transformed into sounds • Ear: a receiver of acoustic waves • The ear - brain system • Audibility limits • Distinctive characters of the sounds • Sensitivity of the auditory system • How to reinforce auditory sensitivity • Stereophony • Echo and reverberation • How to take care of the hearing system
Price excl. tax: €123.73
Price inc. tax: €148.48

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Environment of life, B19

23 feasible experiments Topics: • Soil as a habitat • Mineral fraction of the soil • Organic fraction of the soil • Soil contains air • Soil contains water • Practice on the use of acidity indicators • Soil acidity • Carbonates in the soil • The permeability of the soil • Soil fertility • Biodegradability and soil • Water for life • Water cycle • Vaporization and condensation of water • The rain • Sea water • Drinking water and its distribution • Water pollution • How to look for ammonia • How to look for nitrite • How to look for sulphates • The research of surfactants • What the atmosphere is? • Air composition • Absolute and relative humidity • Atmospheric pollutants • Acid rains • The greenhouse effect
Price excl. tax: €184.07
Price inc. tax: €220.88

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Price excl. tax: €20.45
Price inc. tax: €24.54

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Touch, smell and taste, B18

Touch (11 feasible experiments) - Topics • Skin • Skin sensitivity • Stimulus of contact • Pressure stimulus • Pain stimulus • Temperature and heat • Body temperature • Thermal stimulus • See with touch • Fingerprints • Skin hygiene Smell (8 feasible experiments) - Topics • How the matter is made • Aggregation states of the matter • Change in states • Nose: the smell organ • How the smells are felt • How to identify the smells • Addiction to smells • Nose hygiene Taste (6 feasible experiments) - Topics • Tongue: organ of taste • How we feel the flavors • The four basic flavors • Taste and smell • Taste and sight • Good tastes and bad tastes
Price excl. tax: €107.88
Price inc. tax: €129.46

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General biology (25 slides) 15917

Skeletal muscle - small intestine - diaphanus cartilage - elastic cartilage- compact bone - mammal tongue - mammalstomach - lung - yoghurtbacteria - starch - iris ovary- raphides -dicotyledon thallus - stonecells - pollen - ascomycota - butterfly wing -fly leg - sponge spicule- hydroides - bird blood - mammal hair -ctenoid scale - bee wing -spider leg.  

Price excl. tax: €64.42
Price inc. tax: €77.31

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Plants B14

25 feasible experiments
Topics

• Introduction

• Seed morphology

• Seed germination

• Aqueous solutions

• Osmosis

• Mineral salts

• Roots

• Root hairs

• Movement of the roots

• Stem

• Internal structure of the stem

• Underground stems

• Absorption of the lymph

• Capillarity

• Why in the summer the leaves are green

• Why in autumn the leaves are yellow

• Chlorophyll photosynthesis

• The transpiration of plants

• Starch

• Morphology of the flower

• Fruit

• Development of carbon dioxide in plants

• How to build an herbarium

Price excl. tax: €155.44
Price inc. tax: €186.52

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Animals B15

15 feasible experiments
Topics
• Introduction
• Seed morphology
• Seed germination
• Aqueous solutions
• Osmosis
• Mineral salts
• Roots
• Root hairs
• Movement of the roots
• Stem
• Internal structure of the stem
• Underground stems
• Absorption of the lymph
• Capillarity
• Why in the summer the leaves are green
• Why in autumn the leaves are yellow
• Chlorophyll photosynthesis
• The transpiration of plants
• Starch
• Morphology of the flower
• Fruit
• Development of carbon dioxide in plants
• How to build an herbarium
• Biology
• Cells
• The food chain
• Eat to live
• Starch in foods
• Digestion of starch
• How to recognize fat types
• Digestion of fats
• How to recognize protein types
• Protein digestion
• Enzymes
• Taste buds
• Energy and life of animals
• Combustion
• Breathing of animals
• pH and organic reactions

Price excl. tax: €150.83
Price inc. tax: €181.00

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Price excl. tax: €31.70
Price inc. tax: €38.04

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Brain GD0304

Естествен размер
 
Price excl. tax: €50.62
Price inc. tax: €60.74

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Price excl. tax: €24.03
Price inc. tax: €28.84

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