Khan Academy

Video 1: Two-step inequalities
Video 2: Two-step inequality word problem
Video 3: Another two-step inequality word problem
Online activity 1: Answer the short questions on two-step inequalities
Online activity 2: Answer the two-step inequality word problems

Video 1: Plotting inequalities
Online activity 1: Inequalities from a graph
Online activity 2: Plotting inequalities
Video 2: Testing solutions to inequalities
Online activity 3: Testing solutions to inequalities
Video 3: Examples of one-step inequalities
Video 4: Further examples of one-step inequalities
Video 5: One-step inequality word problem
Online activity 4: One-step inequalities
Online summary and review: Online review and summary of one-step inequalities
 

Video 1: Dividing a decimal by a whole number with fraction models
Video 2: Dividing a decimal by a whole number on the number line
Video 3: Example of dividing a decimal by a whole number
Online activity 1: Dividing decimals by whole numbers
Video 4: Visually dividing a whole number by a decimal
Online activity 2: Dividing whole numbers by decimals

Video 1: Understanding decimal multiplication
Video 2: Multiplying decimals using estimation
Video 3: Developing strategies for multiplying decimals
Video 4: Developing strategies for multiplying 2-digit decimals
Online activity 1: Drag and drop the product answer to match the correct expression
Online activity 2: Answer the decimal multiplication questions

Video 1: Strategies for subtracting decimals
Online activity 1: Subtracting decimals (tenths)
Video 2: Subtracting decimals (hundredths)
Video 3: More advanced subtraction strategies with hundredths
Online activity 2: Subtracting decimals (hundredths)

Video 1: An introduction to adding decimals 
Video 2: Adding decimals with ones and tenths parts
Video 3: Adding decimals (tenths)
Video 4: Adding decimals (hundredths)
Video 5: Adding decimals with ones, tenths and hundredths
Online activity: This activity poses four questions where you are required to add different forms of decimals