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Biology 8th grade

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EXPLORING OUR SENSES 5719

The sense organs are the instruments through which the body can receive and process the stimuli coming from outside. With the material provided in this collection teachers can enrich their lessons through the exhibition of sense organs’ models and conducting meaningful experiments, on physical and chemical stimuli. Even the students, divided into six working groups, can perform simple experiments through which:
- they acquire the knowledge that every sensation contributes to the perception of the outside world;
- they learn to distinguish the information coming from each sense;
- they learn the potentialities and limits of their sense organs and the hygienic standards for their correct use;
- they understand the importance of the connection between the sense organs and the brain in perception.
70 feasible experiments

Topics:

TOUCH
• The skin
• Skin’s sensibility
• Touch’s stimuli
• Pressure’s stimuli
• Pain’s stimuli
• Temperature & heat
• Thermal stimuli
• Hot and cold receptors
• To see through touch
• Fingerprints
• The skin’s hygiene


SIGHT
Light sources and illuminated bodies
Light propagation
Light transports energy
The eye: a light receiver
Lenses
The eye as an optical system
Eyes’ defects and their correction
Resolving power of the eye and visual acuity
The eye-brain system
The persistence of images on the retina
Temporal synthesis of colors
Spatial synthesis of colors
Binocular vision
Sense of depth
Stereoscopic vision
Field of view
Optical illusions
How to help the sight


OLFACTION
• What’s the matter like
• The matter’s aggregation stages
• Changes of state
• The nose: the organ of smell
• How smells are detected
• How smells are identified
• How we get used to smells
• The nose’s hygiene


TASTE
• The tongue and the taste buds
• How we taste different tastes
• The four main tastes
• Taste and olfaction
• Taste and sight
• Good and bad smells


HEARING
• Oscillating motion
• Graphical representation of the oscillating motion
• When we hear a sound
• Why we hear sounds
• Acoustic waves
• How acoustic waves turn into sounds
• The ear: a receiver of acoustic waves
• The ear-brain system
• The limits of audibility
• The distinctive features of sound
• The sensibility of auditory apparatus
• How to reinforce the auditory sensibility
• Stereo phonics
• Echo, reverberation and boom
• Cure of auditory apparatus

Price excl. tax: €940.79
Price inc. tax: €1,128.95

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Kit for experiments on breathing 7017

This kit allows yuo to simulate the functioning of lungs during the two phases of breathing and to reveal the presence of carbon dioxide in the exhaled air.

Price excl. tax: €100.21
Price inc. tax: €120.26

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Kit for experiments on digestion 7023

Suitable for secondary school.
Price excl. tax: €92.03
Price inc. tax: €110.44

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Price excl. tax: €132.94
Price inc. tax: €159.53

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Price excl. tax: €38.35
Price inc. tax: €46.02

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Eye and sight, B16

28 feasible experiments Topics • Light • Light sources and lighting bodies • If there was no air • The light carries energy • The nature of light • Electromagnetic waves spectrum • Sight • Eye: a light receiver • Lenses • Eye as an optical system • Defects of the eye and their correction • Resolving power of the eye and visual acuity • Eye-brain system • Persistence of images on the retina • White light • Temporal synthesis of colors: Newton disk • Spatial synthesis of colors • Binocular vision • The sense of depth • Stereoscopic vision • The visual field of the eye • Optical illusions
Price excl. tax: €211.17
Price inc. tax: €253.40

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Price excl. tax: €12.78
Price inc. tax: €15.34

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The cell and the animal tissues (25 slides) 15629

Squamous epithelium of amphibian - Squamous stratified epithelium- Cuboidal Epithelium - Simple columnar epithelium - Pseudostratifiedcolumnar epithelium - Ciliated epithelium - Transitional epithelium -Fibrous connective tissue of a mouse’s tail - Reticular connective tissue- Fat Connective tissue - Hyaline Cartilage - Elastic Cartilage - FibrousCartilage - Human bone tissue - Growing bone and joint cartilage of afetus’ finger - Fish Blood - Bird blood (sparrow) - Human blood -Striatedmuscle, dissociated with whole fibres, nuclei, fibrils and striations- Smoothinvoluntary muscle, dissociated - Cardiac muscle, dissociatedwith ramified cells, striations and intercalated discs - Muscle and tendon,lateral section - Nerve cells, spinal cord section, Golgi’s method - Nerve,cross and lateral section, hematoxylin and eosin stain - Intercostalmuscles’ neuromuscular synapse, auric impregnation.
 
Price excl. tax: €59.31
Price inc. tax: €71.17

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The human tissues 2 (10 slides) 15609

Human skin, section t.s. of hairs - Human salivary gland t.s. - Humancerebellum t.s. - Bacteriafrom human intestine - Human spermatozoa, smear - Human heartmuscle, t.s. and l.s. - Humanbone t.s. - Human liver tissue t.s. - Human intestinal wall t.s. - Humankidney, t.s. of a cortical zone.
 
Price excl. tax: €25.57
Price inc. tax: €30.68

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The human tissues 1 (10 slides) 15608

Human blood smear with red and white cells - Human mouth, epithelialcells - Human striate muscle l.s. - Human cerebrum t.s. - Human tonsilwith lymph nodules, t.s. - Human lung t.s. - Human skin l.s. - Humanstomach t.s. - Human red bone marrow, blood cell in development -Human testis t.s.
 
Price excl. tax: €25.57
Price inc. tax: €30.68

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