"Never forget! If you are patient, persistent and consistent enough, you can learn and master anything."

Topics explored include what life sciences is, how to draw biological diagrams, molecules for life, water's importance for life, vitamins and minerals.

27 Lessons 13 Topics

Topics explored include cells as the basic units of life, molecular makeup of cells, cell structure and function, cell organelles, cell division, the cell cycle, mitosis and cancer.

29 Lessons 10 Topics

Topics explored include what tissues and organs are, plant tissues, animal tissues, applications of indigenous knowledge and biotechnology and the leaf as an organ.

27 Lessons 6 Topics

Topics explored include dicotyledonous plants, transpiration, plant wilting, skeletons, musculoskeletal tissues, circulatory systems in animals, bone and heart diseases.

60 Lessons 20 Topics

Topics explored include biosphere, biomes, environment, ecosystems, energy flow, nutrient cycles, biodiversity, classification schemes, and the five kingdom system.

41 Lessons 14 Topics

Topics explored include the representation of life's history, mass extinctions and life's history, impact of humans on biodiversity and the environment, and fossil tourism.

20 Lessons 7 Topics

Topics explored include what life is, an introduction to the chemical foundation of life, atoms, isotopes, ions, molecules, water, carbon and the roles they play in life.

43 Lessons 6 Topics

Topics explored include synthesis of biological macromolecules, carbohydrates, lipids, proteins and nucleic acids, and the molecular structures of these macromolecules.

23 Lessons 5 Topics

Topics explored include what the cell is, structure of prokaryotic and eukaryotic cells, structure and function of plasma membranes and cell metabolism.

66 Lessons 16 Topics

Topics explored include review of functions, basic classes of functions, polynomial and trigonometric functions, inverse functions, exponential and logarithmic functions.

29 Lessons 6 Topics

Topics explored include laboratory skills, the atom, atomic models, atomic mass and diameter, structure of the atom, isotopes, electronic configurations and compounds.

30 Lessons 12 Topics

Topics explored include materials, mixtures, pure substances, formulae of substances, metals, metalloids, non-metals, the periodic table and arrangement of the elements.

22 Lessons 10 Topics

Topics explored include states of matter, kinetic molecular theory, motion of particles, ideal gas laws, ideal gas equations, intermolecular forces and the chemistry of water.

25 Lessons 6 Topics

Topics explored include physical and chemical change, conservation of atoms and mass in reactions, law of constant composition, and balancing chemical equations.

13 Lessons 5 Topics

Topics explored include ions in aqueous solution, electrolytes, ionization and conductivity, precipitation reactions as well as other types of reactions.

12 Lessons 4 Topics

Topics explored include atomic mass and the mole, composition, amount of substance, stoichiometric calculations, gases and solutions, and volume relationships.

22 Lessons 7 Topics

Topics explored include what chemical bonding is, Lewis structures, covalent, ionic and metallic bonding, writing formulae, molecular shapes, electronegativity.

27 Lessons 11 Topics

Topics explored include energy changes in chemical reactions, exothermic and endothermic reactions, activation energy and activated complex and reaction rates.

25 Lessons 6 Topics

Topics explored include what chemical equilibrium is, reversible reactions, the equilibrium constant, Le Chatelier's principle and using the Le Chatelier's principle.

22 Lessons 3 Topics

Topics explored include acids and bases, acid-base reactions, redox reactions, oxidation and reduction, pH scale, pH calculations, titrations and titration calculations.

33 Lessons 8 Topics

Topics explored include writing redox and half-reaction equations, galvanic and electrolytic cells, standard electrode potentials, and applications of electrochemistry.

23 Lessons 7 Topics

Topics explored include organic molecular structures, IUPAC naming and formulae, physical properties and structure of organic molecules, plastics and polymers.

43 Lessons 7 Topics

Topics explored include, nutrients and the chemical industry, fertilizers, the fertilizer industry, alternative sources of fertilizers, fertilizers and the environment.

24 Lessons 5 Topics

Topics explored include what matter is, elements, atoms, ions, isotopes, compounds, composition of substances and solutions, atomic mass, moles and molarity.

67 Lessons 19 Topics

Topics explored include writing chemical equations, classifying chemical reactions, reaction stoichiometry, reaction yields and quantitative chemical analysis.

28 Lessons 6 Topics

Topics explored include electromagnetic energy, the Bohr model, quantum theory, electronic structure of atoms and periodic variations in element properties.

41 Lessons 6 Topics

Topics explored include consonant sound, voiced and voiced consonant sounds, vowel sounds, monophthongs, diphthongs, stress and emphatic stress.

49 Lessons 8 Topics

Topics include a brief history of numbers and the study of mathematics, what whole numbers are as well as how to carry out arithmetic operations on whole numbers.

34 Lessons 6 Topics

Topics include use of the language of algebra, simplifying expressions, solving equations, finding multiples and factors, prime factorization and least common multiple.

25 Lessons 6 Topics

Topics explored include introduction to integers, adding integers, subtracting integers, multiplying and dividing integers, solving equations using integers.

31 Lessons 5 Topics

Topics explored include visualizing fractions, multiplying and dividing fractions as well as mixed numbers and complex fractions, solving equations with fractions.

42 Lessons 8 Topics

Topics explored include mathematical skills for science, physical quantities and units, scientific method, scalars and vectors as well as vectors in two dimensions.

52 Lessons 15 Topics

Topics explored include reference frames, speed, velocity, acceleration, instantaneous velocity, description of motion, equations of motion, and vertical projectile motion.

36 Lessons 10 Topics

Topics explored include forces, types of forces Newton's first, second and third laws of motion, Newton's law of universal gravitation as well as forces between masses.

33 Lessons 5 Topics

Topics explored include mechanical, potential and kinetic energy, conservation of mechanical energy, work, work-energy theorem, conservation of energy and power.

28 Lessons 10 Topics

Topics explored include momentum, a revisitation of Newton's second law in terms of momentum, conservation of momentum, elastic and inelastic collisions and impulse.

21 Lessons 7 Topics

Topics explored include pulses, superposition of pulses, transverse and longitudinal waves, crests, troughs, amplitude, wavelength, period, frequency and wave speeds.

39 Lessons 21 Topics

Topics explored include the two kinds of charge, principle of conservation of charge, conductors and insulators, quantization of charge, Coulomb's law and electric fields.

17 Lessons 5 Topics

Topics explored include potential difference, emf, current, resistance, series and parallel resistors, Ohm's law, power, electrical energy, batteries and internal resistance.

30 Lessons 13 Topics

Topics explored include magnetic fields, permanent magnets, the compass, electromagnetism, Faraday's law, electrical generators, motors and alternating current.

31 Lessons 7 Topics

Topics explored include wave-like nature of em radiation, electromagnetic spectrum, particle-like nature of em radiation, wavefronts, diffraction and Doppler effect.

22 Lessons 10 Topics

Topics explored include light rays, properties of light, speed of light, refraction, Snell's law, total internal reflection, photoelectric effect, emission and absorption spectra.

24 Lessons 11 Topics

Topics explored include the nature of science and physics, physical quantities, time, velocity, speed and acceleration, one-dimensional and two-dimensional kinematics.

56 Lessons 17 Topics