Keywords: Periodic table – Elements – Groups – Periods – Classification

Keywords: Transverse waves – Vibration – Amplitude – Crest – Trough

Keywords: Waves – Spring – Vibration – Energy – Propagation

The particles of matter have interstitial spaces between themKeywords (English): matter particles – intermolecular spaces – physical states – particle motion

Three states of matterstates of matter – solid – liquid – gas – physical changes

Keywords: Type of substance – Heat – Heat capacity – Heating

Keywords: States of matter – Shape – Flow – Solid – Liquid – Gas

Keywords: Volume – Compressibility – Gases – Liquids – Solid

Keywords: Mass – Matter – Measurement – Balance – Volume

Keywords: Water cycle model – Evaporation – Condensation – Precipitation – Model

realization of light refraction

How do generators work?Keywords (English): electric generator – induction – magnetic field – electric current

the goal:Explaining the factors that affect the process of photosynthesis.Materials and tools:Glass beaker - Glass funnel - Test tube - Aquatic plant - Sodium bicarbonate - Light sourceSteps:1- Fill the glass with water.2- Add a quantity of sodium bicarbonate to the water.3- Place the aquatic plant......

Keywords: Convex lens – Concave lens – Refraction – Focal point – Image

Morse codeKeywords (English): Morse code – communication – dots and dashes – coding

Keywords: Adaptation – Animals – Plants – Environment – Survival – Structural and behavioral traits

Light interaction with different types of materials (Reflection)reflection – light – materials – surfaces

Keywords: Light reflection – Angle of incidence – Angle of reflection – Mirrors

Keywords: Ohm’s law – Voltage – Current – Resistance – Circuit

Keywords: Tensile force – Spring – Extension – Hooke’s law – Elastic force

Keywords: Magnetic force – Magnet – Poles – Attraction – Repulsion

Phases of mitosis - Cell cyclecell cycle – mitosis – chromosomes – growth – cell division

Parts of a flower

Male and female reproductive systemKeywords (English): reproductive system – male – female – fertility – reproduction

Voltage, current, and resistance. voltage – electric current – resistance – electric circuit – Ohm’s law – potential difference

 Urinary systemKeywords (English): urinary system – kidneys – bladder – ureters – urine – blood filtration – excretion

Keywords: Charges – Positive charge – Negative charge – Rubbing – Static electricity

Keywords: Genetics – Genes – Mendel – Traits – Punnett squares

Keywords: Chlorophyll – Light absorption – Photosynthesis – Pigments

Keywords: Attraction – Repulsion – Forces – Charges – Magnet

Keywords: Electroscope – Charges – Static electricity – Motion – Detection

Keywords: Photosynthesis – Light intensity – Plants – Oxygen – Chlorophyll

Keywords: Life stages – Human – Plant – Animal – Development

Keywords: Starch formation – Photosynthesis – Light – Chlorophyll – Glucose

Objective: To observe how waves propagate in water and study the effect of depth on wave speed and direction.Materials: Tray – Water – Ruler – Disc.Steps: Take a water-resistant tray and fill it with water to a depth of about 1 cm. Lift one edge of the tray slightly and let it fall gently to generat......

Objective: To prove that chemical digestion of starch begins in the mouth with the help of amylase enzyme present in saliva.Materials: Bread – Iodine solution – Two plates – Dropper – Spoon.Steps: Place a small piece of bread on the first plate and add a drop of iodine solution. Place a small piece......

Objective: To verify that sound requires a material medium to travel, and that solid media transmit sound more efficiently than air.Materials: Two cups – Sharp object to make a hole – Long string.Steps: Make a small hole in the bottom of each cup. Pass the ends of the string through the holes and ti......

Objective: To understand how sound is reflected when it hits a reflective surface.Materials: Sound source – Cardboard tubes – Hard reflective surface – Sound barrier – Paper.Steps: Place the sound source inside the first tube and point it toward the reflective surface. Move the second tube until the......

Objective: To explore the ability of different materials to insulate and reduce sound by comparing sound levels after using various insulating materials.Materials: Different insulating materials (such as paper, bubble wrap, blanket). Sound source. Box with a lid. Sound level meter.Steps: Place the s......

Measuring Sounds

Objective: To understand the principle of echolocation by using light and a mirror to model how bats and dolphins locate objects.Materials: Small flat mirror _ Light source _ Piece of cardboard _ Four small supports to raise the cardboard above the mirror.Steps: Place the mirror vertically on the ta......

Keywords: Chemical reaction – Reactants – Products – Change

The goal of the experiment: Explain the difference of materials from each other in the ability of electrical conductivity Experience Tools:  Battery - electric lamp - glass cup - acids, strengths, salts and sugar solution - wood - copper - steel nail - connecting wires Steps of the experiment:......

the goal:To study the relationship between the pitch of a sound and its source frequency.Materials and tools:Large size book - rubber band - two pensSteps:1- Tie a rubber band around the book and place the two pens under the tape near the ends of the book2- Press the index finger of the left hand on......

Unit Two: Sound and Light. Lesson 1: Characteristics of sound waves.Keywords (English): sound – density – sound intensity – wave propagation – medium

Unit Two: Sound and Light. Lesson 2: The wave nature of light.Purpose of experimentLight travels in straight linestoolswooden or carton screen, each one has a centered hole, candle, lighterstepsWelcome. Now you are going to do an experiment that shows that light travels in straight lines. Look......

the goal:Identifying the components of the digestive system.Materials and tools:A model of the digestive system organs - Anatomy lab - Dissection tools.Steps:Click on the digestive system button, then click on each organ button to display it.You can also click on the 3D button to view the organs in......

Keywords: Osmosis – Semipermeable membranes – Concentration – Water – Diffusion

Keywords: Light – Plants – Photosynthesis – Growth – Energy

Keywords: Respiratory system – Lungs – Respiration – Trachea – Oxygen

Keywords: Food chain – Consumers – Producers – Predators – Energy

Keywords: Convex lenses – Concave – Light – Refraction – Focal point

Keywords: Circulatory system – Heart – Blood – Vessels – Circulation

Keywords: Skeletal system – Bones – Joints – Skeleton – Support

Keywords: Nervous system – Nerves – Brain – Spinal cord – Nerve signals

Effect of light on the appearance of chlorophyll in some plantsKeywords (English): chlorophyll – light – photosynthesis – plant pigments

Parallel Connection This video shows how to conduct the experimentKeywords (English): parallel connection – electric circuits – voltage – current

Series connection

Energy transformations in devicesKeywords (English): energy transformations – electrical devices – heat – light – motion

The water cycleKeywords (English): water cycle – evaporation – condensation – precipitation

How do charged objects interact at a distance? (introductory experiment)

the goal:We determine the relationship between the polarity of the field and the direction of the current.We also explain the relationship between the intensity of the electric current and the strength of the magnetic field.Materials and tools:Cardboard - Iron nail - Ammeter - Battery - Electrical s......

the goal:Revealing how photosynthesis and cellular respiration work together in an ecosystem.Materials and tools:Bromothymol blue (BTB) solution - Glass beaker - Test tubes - Aluminum foil - Aquatic plant.Steps:1- Add a quantity of bromothymol blue (BTB) solution to a glass beaker using a pipette.2-......

Animal and plant cell under a microscopeKeywords (English): animal cell – plant cell – microscope – nucleus – organelles

the goal:Inference: Cells use food or sugar to produce energy. Note the mitochondria in different cells.Materials and tools:Listed equipment - 2% glucose solution - resealable plastic bag - small weights - glass beaker - water bath at 37 degrees CelsiusSteps:1. Put a quantity of glucose solutio......

Compare melting pointsKeywords (English): melting point comparison – temperature – solids

Keywords: Atmospheric pressure – Altitude – Barometer – Air – Air density

Keywords: Earth’s interior – Crust – Mantle – Core – Plates

the goal:Create a model illustrating the movement of the Earth during an earthquake.Materials and tools:Pieces of cork - a bowl - soil - a wooden piece.Steps: 1- Place the two pieces of cork next to each other in the bowl.2- Cover the cork pieces with soil.3- Gently pull the bowl about 5 c......

What makes rocks different from one another? rocks – minerals – color – hardness – texture – geology