YEAR 1 CLASSNOTES
Maths vocabulary Classnotes
Basic English vocabulary for maths.
Remember what you know Exercises
Revision activities for the beginning of the school year - 308 Kb .pdf file.
What do brackets mean? Classnotes
Classnotes to explain how we use brackets in algebra.
Order of operations Classnotes
Classnotes to explain the order of operations in algebra.
UNIT 1: Natural numbers Classnotes (with problems - 642 Kb)
UNIT 2: Divisibility Classnotes (with problems - 564 Kb)
UNIT 3: Integers Classnotes (with problems - 640 Kb)
Why is 4 — 7 = —3 ? Classnotes to explain about operations with negative numbers
_____________________________ (part 1 — adding and subtracting).

Why is —2 • 4 = —8 ? Classnotes to explain about operations with negative numbers
______________________________ (part 2 — multiplying).

UNIT 4: Fractions Classnotes (with problems - 423 Kb)
Extra exercises (exercises with answer key - 101 Kb)
Classnotes Classnotes to explain how to add fractions.
UNIT 5: Decimal Numbers Classnotes (with problems - 289 Kb)
UNIT 6: Powers and Roots Classnotes (with problems - 721 Kb)
Tutorial How to calculate a square root
Have a look at this tutorial to learn to calculate a square root.
Mathematical curiosities Why are 4, 9, 16,... perfect squares?
Two-minute classnotes to explain why some numbers are called "perfect squares".
UNIT 7: Measures Classnotes (with problems - 578 Kb)
Worksheet Extra exercises about metric system units of measurement - 187 Kb.
UNIT 8: Proportions Classnotes (with problems - 1.18 Mb) (2009-10 version - 561 Kb)
UNIT 9: Algebra and Equations Classnotes (with problems - 527 Kb)
Problems with equations? Classnotes
Explanations about basic equations and how they work.
Why do signs change when we move terms in an equation? Classnotes
Explanations about basic equations and how they work.
UNIT 10: Areas and Perimeters Classnotes (with problems - 422 Kb)
Geometry vocabulary classnotes
Basic English vocabulary for geometry.
UNIT 11: Graphs and Statistics Classnotes (with problems - 197 Kb)
 YEAR 1 EXERCISES
UNIT 1: Natural numbers Basic operations with natural numbers (problems)
UNIT 2: Divisibility 1.- Multiples and factors (part A)
Factors (part B)
Prime numbers (part C)
2.- Factorising (part A)
Factorising problems (part B)
Common multiples and factors (part C)
UNIT 3: Integers Basic operations with integers (operations)

JJCC