
Construction Math Course
Stop losing money on site because the numbers do not add up. This Construction Maths Course covers everything from basic arithmetic and geometry to trigonometry and cost estimating — all built around real trade tasks. Whether you are framing walls, pouring concrete, or pricing a bid, you will have the maths skills to get it right.
What you will learn:
This course takes you through all the maths skills a construction professional needs, starting with whole numbers, fractions, and decimals and building up to algebra, trigonometry, and project estimating. You will learn to read tape measures, convert between imperial and metric units, and pull accurate dimensions from blueprints. Geometry lessons cover triangles, the Pythagorean theorem, and layout techniques used on site. You will calculate areas and volumes for slabs, roofs, walls, and excavations, then apply those numbers to material takeoffs. Ratio and proportion sections cover concrete mix designs, slope calculations, and scaled drawings. The course finishes with applied estimating, where you combine material quantities, labour hours, and unit costs to produce a bid.
How you study in practice Construction Math Course
How you practise Construction Math Course
For businesses looking to train their team
With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.
Course content
8 Chapters • 41 LessonsDuration between 4 and 360 hours (you decide)
Chapter 1HideHide detailsSee detailsFoundations of Construction Maths
Foundations of Construction Maths
Lesson 1 • Using a Construction Calculator
Introduces dedicated construction calculators for feet-inch-fraction entry and built-in trade functions. Bridges manual arithmetic skills to efficient field tool use.
Lesson 2 • Order of Operations
Explains BODMAS rules and their application in multi-step construction formulas. Prevents calculation errors in complex quantity takeoffs.
Lesson 3 • Fractions for Trade Work
Introduces proper, improper, and mixed fractions common in timber and pipe sizing. Connects fraction operations to reading tape measures and cut lists.
Lesson 4 • Whole Numbers in Construction
Covers addition, subtraction, multiplication, and division of whole numbers in site contexts. Establishes the arithmetic base for all subsequent measurement work.
Lesson 5 • Decimals and Percentages
Teaches decimal place value, conversion between fractions and decimals, and percentage calculations. Supports cost estimation and material waste calculations.
Chapter 2HideHide detailsSee detailsMeasurement Systems and Conversions
Measurement Systems and Conversions
Lesson 1 • Reading Plans and Scales
Explains architectural and engineering scale notation and how to extract real dimensions from drawings. Connects measurement skills to blueprint interpretation.
Lesson 2 • Imperial Measurement System
Covers inches, feet, yards, and miles with their relationships and common construction applications. Provides the unit framework used in most domestic trade work.
Lesson 3 • Unit Conversion Techniques
Teaches dimensional analysis and conversion factor methods for switching between imperial and metric. Eliminates unit mismatch errors in mixed-specification projects.
Lesson 4 • Metric Measurement System
Introduces millimetres, centimetres, metres, and kilometres as used in international and engineered drawings. Prepares students for metric-specified project documents.
Lesson 5 • Weight and Volume Measurements
Covers pounds, tons, gallons, cubic feet, and their metric equivalents for ordering materials. Links unit knowledge to concrete, aggregate, and liquid material quantities.
Chapter 3HideHide detailsSee detailsGeometry Fundamentals for Construction
Geometry Fundamentals for Construction
Lesson 1 • Circles and Curved Shapes
Introduces radius, diameter, circumference, and arc length for circular construction elements. Supports layout of curved walls, columns, and pipe runs.
Lesson 2 • Triangles and the Pythagorean Theorem
Covers triangle classification, interior angle sums, and the Pythagorean theorem for right-angled triangles. Directly supports squaring foundations and calculating rafter lengths.
Lesson 3 • Lines, Angles, and Relationships
Defines parallel, perpendicular, and intersecting lines and classifies angles by type. Establishes geometric vocabulary needed for layout and framing tasks.
Lesson 4 • Geometric Layout Techniques
Applies geometric principles to field layout using string lines, batter boards, and measuring tools. Bridges classroom geometry to accurate on-site construction layout.
Lesson 5 • Quadrilaterals and Polygons
Examines squares, rectangles, parallelograms, trapezoids, and irregular polygons common in floor plans. Prepares students for perimeter and area calculations in the next chapter.
Chapter 4HideHide detailsSee detailsArea and Volume Calculations
Area and Volume Calculations
Lesson 1 • Volume of Common Shapes
Applies volume formulas for prisms, cylinders, cones, and spheres to concrete and excavation work. Provides the calculation foundation for ordering bulk materials.
Lesson 2 • Material Quantity Takeoffs
Integrates area and volume calculations into structured takeoff sheets for concrete, fill, and finishes. Produces job-ready quantity estimates with waste and overage factors applied.
Lesson 3 • Surface Area of 3D Objects
Calculates surface area of prisms, cylinders, and pyramids for siding, insulation, and formwork. Extends 2D area skills to three-dimensional construction elements.
Lesson 4 • Irregular Area Calculation
Teaches decomposition of complex floor plans into simple shapes and the offset method for curved boundaries. Enables accurate takeoffs for non-standard room layouts.
Lesson 5 • Area of Flat Surfaces
Derives and applies area formulas for rectangles, triangles, trapezoids, and circles. Forms the core skill for flooring, roofing, and wall surface calculations.
Chapter 5HideHide detailsSee detailsRatio, Proportion, and Scaling
Ratio, Proportion, and Scaling
Lesson 1 • Ratios in Construction Mixes
Defines ratios and applies them to concrete, mortar, and grout mix proportions by weight and volume. Ensures consistent mix quality through accurate ratio interpretation.
Lesson 2 • Slope, Grade, and Pitch
Calculates slope as rise-over-run for roofs, ramps, drainage, and roads using ratio and percentage formats. Connects proportion skills to grading and drainage design requirements.
Lesson 3 • Solving Proportions
Teaches cross-multiplication and unit-rate methods for solving unknown quantities in proportional relationships. Supports material scaling and drawing dimension extraction.
Lesson 4 • Scale Drawings and Models
Uses proportional reasoning to create and interpret scale drawings and physical models. Reinforces plan-reading accuracy and supports shop drawing verification.
Lesson 5 • Proportional Estimation Techniques
Applies proportional reasoning to quick field estimates for materials, labour, and time. Builds mental maths habits that improve on-site decision-making speed.
Chapter 6HideHide detailsSee detailsAlgebra and Formulas in Construction
Algebra and Formulas in Construction
Lesson 1 • Solving One- and Two-Step Equations
Teaches inverse operations to isolate unknowns in one- and two-step equations. Applies directly to solving for missing dimensions, quantities, and material needs.
Lesson 2 • Rearranging Construction Formulas
Demonstrates algebraic manipulation to isolate any variable in multi-variable trade formulas. Enables flexible use of area, volume, and load formulas regardless of which value is unknown.
Lesson 3 • Applying Formulas to Trade Problems
Uses standard construction formulas for board feet, concrete volume, and beam span in structured problem sets. Reinforces formula selection and unit consistency in applied contexts.
Lesson 4 • Variables and Expressions
Introduces variables, constants, and algebraic expressions as shorthand for construction quantities. Builds the symbolic reasoning needed to work with trade formulas.
Lesson 5 • Introduction to Graphing Relationships
Plots linear relationships between construction variables on coordinate grids to visualise trends. Supports interpretation of load charts, cost graphs, and performance curves.
Chapter 7HideHide detailsSee detailsTrigonometry for Construction Trades
Trigonometry for Construction Trades
Lesson 1 • Solving for Unknown Angles
Applies inverse trig functions to find unknown angles from known side lengths. Supports bevel angle setting, stair angle calculation, and slope verification.
Lesson 2 • Solving for Unknown Sides
Uses trig ratios to find missing side lengths when one side and one angle are known. Applied to rafter run, rise, and length calculations in roof framing.
Lesson 3 • Sine, Cosine, and Tangent Ratios
Defines the three primary trigonometric ratios relative to a reference angle and teaches SOH-CAH-TOA. Provides the calculation tools for finding unknown sides and angles.
Lesson 4 • Trig Applications in Roof and Stair Layout
Integrates trig skills into complete rafter layout, hip and valley calculations, and stair stringer design. Produces dimensioned layout solutions for real framing scenarios.
Lesson 5 • Right Triangle Review
Revisits right-angled triangle properties, hypotenuse identification, and the Pythagorean theorem as a trig foundation. Ensures geometric prerequisites are solid before introducing trigonometric ratios.
Chapter 8HideHide detailsSee detailsApplied Construction Estimating Maths
Applied Construction Estimating Maths
Lesson 1 • Cost Estimation and Bid Pricing
Combines material quantities and labour hours with unit costs to build a complete project cost estimate. Applies markup, overhead, and profit percentage calculations to produce a bid price.
Lesson 2 • Timber and Framing Takeoffs
Calculates board feet, linear feet, and piece counts for wall, floor, and roof framing systems. Applies area and ratio skills to generate complete framing material lists.
Lesson 3 • Estimate Review and Error Checking
Teaches systematic review techniques to catch arithmetic errors, unit mismatches, and omissions in estimates. Builds professional quality-control habits that protect project profitability.
Lesson 4 • Roofing and Siding Quantities
Calculates roof area using pitch factor and slope multiplier, then converts to squares for material ordering. Applies surface area skills to siding, sheathing, and underlayment takeoffs.
Lesson 5 • Labour Hour Estimation
Uses production rates and unit labour hours to estimate crew hours for common construction tasks. Connects maths skills to scheduling and workforce planning.
Lesson 6 • Concrete and Masonry Quantities
Computes concrete volume for slabs, footings, and walls and converts to bags or yards for ordering. Extends volume skills to block, brick, and mortar quantity calculations.
Your valid completion certificate
This course is for you:
Apprentice carpenter: needs trade maths skills to pass licensing exams.
General contractor: wants to verify estimates without depending on others.
Career changer entering construction: lacks formal trade maths background.
Concrete finisher: struggles with volume and mix ratio calculations on site.
Remodelling hobbyist: needs accurate measurements for ambitious home projects.
Estimating assistant: ready to build complete bid packages independently.
What our students say
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