Siaka KoneMr. Kone Math Hub
Siaka Kone, Grade 8 and Algebra I teacher

Siaka Kone

Site owner · Teacher

Standards with receipts

Every topic is labeled Grade 8 State Test, Algebra I Regents, or both — mapped to the Next Generation standards.

Productive struggle

Hints that guide without giving the answer, applets with missions, and practice drawn from released Grade 8 tests and Algebra I Regents.

Teacher-run, FERPA-conscious

No sample students. New accounts wait for Siaka Kone’s approval. Students see only their own records. Google Classroom waits on district approval.

Play with a lab

Drag, slide, and complete missions. No sign-in required.

All applets

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Slope and Rate of Change

Drag two points. Watch rise, run, slope, and the equation y = mx + b update together.

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Solving Equations

Balance a linear equation one inverse operation at a time. See when you get one, none, or infinitely many solutions.

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Systems of Linear Equations

Two race cars run parallel lanes at speeds you set. One meeting, no meeting, or always the same mark — the three cases of a linear system.

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Systems of Linear Inequalities

Shade two half-planes. The overlap is the solution set. Drag a test point to check an ordered pair.

Coherent sequence

Twelve units. Overlaps consolidated. You can jump in anywhere.

Unit 1

The Number System & Roots

Grade 8 State Test

Irrational numbers, rational approximations, and square and cube roots. Algebra I later uses these properties when classifying sums and products.

Unit 2

Exponents & Scientific Notation

Grade 8 State Test

Integer exponent properties and scientific notation for very large and very small quantities — a Grade 8 focus that supports Algebra I quantitative reasoning.

Unit 3

Slope, Rate of Change & Linear Equations

Both exams

The shared spine of both exams: slope as unit rate, y = mx + b, and constructing linear models. Taught once, assessed on both tests.

Unit 4

Solving Linear Equations & Inequalities

Both exams

Grade 8 solving in one variable is extended in Algebra I to inequalities, literal equations, and modeling constraints.

Unit 5

Systems of Linear Equations

Both exams

Graphing, substitution, and elimination. Grade 8 introduces systems; Algebra I requires fluency and the f(x) = g(x) intersection view.

Unit 6

Functions & Function Notation

Both exams

Grade 8 defines functions; Algebra I adds domain, range, and f(x) notation. Taught as one progression, not two separate units.

Unit 7

Transformations, Congruence & Similarity

Grade 8 State Test

Rigid motions, dilations, and similarity. Algebra I later reuses these ideas as function transformations.

Unit 8

Pythagorean Theorem, Distance & Volume

Grade 8 State Test

Right triangles, distance on the coordinate plane, and volume of cylinders, cones, and spheres.

Unit 9

Bivariate Data

Both exams

Scatter plots and lines of best fit appear on both exams; Algebra I adds correlation and residual thinking.

Unit 10

Exponential Functions

Algebra I Regents

Growth and decay, geometric sequences, and distinguishing linear from exponential change.

Unit 11

Quadratic Functions

Algebra I Regents

Standard, vertex, and factored forms; graphs, roots, vertex, and axis of symmetry.

Unit 12

Polynomials, Modeling & Comparison

Algebra I Regents

Polynomial arithmetic and choosing among linear, exponential, and quadratic models.

Where Grade 8 and Algebra I meet

IdeaGrade 8Algebra IHow we teach it once
Linear equations in one variableNY-8.EE.7AI-A.REI.3Teach once in Unit 4 with Grade 8 special cases, then extend to literal equations and modeling.
Slope and y = mx + bNY-8.EE.5–6, NY-8.F.3–4AI-F.IF.6, AI-F.LE.2Unit 3 is the combined treatment. Algebra I adds average rate of change for nonlinear functions.
Systems of two linear equationsNY-8.EE.8AI-A.REI.6, AI-A.REI.11Unit 5 covers graphing and algebra. Algebra I emphasizes f(x) = g(x) and approximate solutions.
FunctionsNY-8.F.1–5AI-F.IF.1–2Define functions in Grade 8 language, then layer domain, range, and f(x) in the same unit.
Scatter plots and linear modelsNY-8.SP.1–3AI-S.ID.6–7One data unit. Algebra I adds residual thinking and correlation language.
TransformationsNY-8.G.1–4AI-F.BF.3Geometry first. Later, rename translations/stretches as function transformations.