Browse source-backed Mathematics and Chemistry topics, then open the complete free lessons available today. Foundations can support adult refreshers; younger learners should learn with a guardian.
Primary 6 and Common Entrance foundations can inform a Primary 5 readiness review. International pathways require the actual board, year, specification and tier; no automatic country-to-country equivalence is implied.
255 curriculum entries match. 16 complete free lessons are published across the catalogue. Registered entries include learning resources and examination contexts; they are not all online lessons.
Represent fractions as numbers and generate/recognise equivalent fractions
Learning goals, prerequisites and source context
Strand
Fractions, Decimals, Percentages, Ratio & Proportion
Topic
Fraction meaning and equivalence
Prerequisites
division; multiplication facts
Context
NCEE/Common Entrance · Nigeria
Record
JEM-P6-M03-001 · Phase 1 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Find percentages of quantities using benchmark and multiplicative strategies
Learning goals, prerequisites and source context
Strand
Fractions, Decimals, Percentages, Ratio & Proportion
Topic
Percentage of a quantity
Prerequisites
JEM-P6-M03-006
Context
NCEE/Common Entrance · Nigeria
Record
JEM-P6-M03-007 · Phase 1 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Use particle arrangement/motion to explain bulk state changes and diffusion
Learning goals, prerequisites and source context
Strand
Matter, Particles & States
Topic
Particle model, states of matter and diffusion
Prerequisites
C00 observation language
Context
Cross-system core · Global / learner-fit
Record
JEM-CH-C01-001 · Phase 5A · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Relate proton/neutron/electron counts to atomic/mass number, charge and identity
Learning goals, prerequisites and source context
Strand
Atomic Structure & Isotopes
Topic
Atomic structure, nuclear notation and models
Prerequisites
C01 matter; integer arithmetic
Context
Cross-system core · Global / learner-fit
Record
JEM-CH-C02-001 · Phase 5A · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Explain ionic formation and bulk properties from lattice structure and electrostatic attraction
Learning goals, prerequisites and source context
Strand
Bonding, Structure & Properties
Topic
Ionic bonding, lattices and properties
Prerequisites
C02-C03 electron/ion reasoning
Context
Cross-system core · Global / learner-fit
Record
JEM-CH-C04-001 · Phase 5A · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Solve simple linear equations and translate short word sentences into equations.
Learning goals, prerequisites and source context
Strand
Algebra
Topic
Simple equations & word sentences
Prerequisites
JEM-J1-M04-001; inverse operations
Context
JSS1 / school scheme · Nigeria
Record
JEM-J1-M04-002 · Phase 3 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Convert and compare ratio/FDP forms and solve proportional contexts flexibly.
Learning goals, prerequisites and source context
Strand
Fractions, Decimals, Percentages, Ratio & Proportion
Topic
Ratio, decimal, fraction & percentage conversion
Prerequisites
JSS1 FDP; multiplication/division
Context
JSS2 / school scheme · Nigeria
Record
JEM-J2-M03-001 · Phase 3 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Plot ordered pairs, read axes/scale and interpret simple linear relationships on Cartesian graphs.
Learning goals, prerequisites and source context
Strand
Functions, Graphs & Coordinates
Topic
Cartesian graphs & linear relationships
Prerequisites
Coordinates; equations; tables
Context
JSS2 / school scheme · Nigeria
Record
JEM-J2-M05-001 · Phase 3 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Write/balance equations as conservation statements and interpret coefficients as particle/mole ratios
Learning goals, prerequisites and source context
Strand
Chemical Formulae, Equations & Representation
Topic
Chemical equations, state symbols and conservation
Prerequisites
correct formulae; atom counting
Context
Cross-system core · Global / learner-fit
Record
JEM-CH-C05-003 · Phase 5B · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Move among mass, moles and particle count while preserving formula composition and units
Learning goals, prerequisites and source context
Strand
Mole Concept & Stoichiometry
Topic
Relative mass, molar mass and mass-mole-particle conversions
Prerequisites
JEM-CH-C06-001; relative masses
Context
Cross-system core · Global / learner-fit
Record
JEM-CH-C06-002 · Phase 5B · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Solve pairs of linear equations by elimination/substitution and interpret solutions in context.
Learning goals, prerequisites and source context
Strand
Algebra
Topic
Simultaneous linear equations
Prerequisites
Linear equations; directed numbers
Context
JSS3 / BECE / Junior-WAEC fit · Nigeria
Record
JEM-J3-M04-002 · Phase 3 · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
Derive/use index laws including zero, negative and fractional indices and solve simple indicial equations
Learning goals, prerequisites and source context
Strand
Number & Number Systems
Topic
Indices: laws, negative and fractional powers
Prerequisites
prime factors; repeated multiplication
Context
SS1 / WAEC-NECO foundation · Nigeria
Record
JEM-S1-M01-002 · Phase 4A · Lesson
These are curriculum-fit contexts, not claims that qualifications or grade levels are equivalent. Check the learner’s actual specification and school scheme.
