Here are some equations that are true when x=3 and y=4 but there is at least one mistake. Click on the ticks and crosses to show this piece of work correctly marked.
x + y = 7 
x  y = 1 
y  x = 1 
2x + 3y = 18 
5x  2y = 7 
4y  x = 13 
xy  10 = 2 
180  2x + y = 178 
20x  3xy = 33 
x^{2} + y = 13 
10x  y^{2} = 14 
y^{2}  x^{2} = 19 
x^{2}y + 13 = 49 
x^{2}y^{2}  2x = 138 
x^{2}y^{3} = 576 
x! + y = 10 
5(x + y) = 52 
3y รท x = 22 
xy
2
= 6

84
xy
= 7

15y
5x
= y



Transum.orgThis web site contains hundreds of free mathematical activities for teachers and students. Click here to go to the main page which links to all of the resources available. Please contact us if you have any suggestions or questions. 

More Activities: 
Comment recorded on the 26 March 'Starter of the Day' page by Julie Reakes, The English College, Dubai: "It's great to have a starter that's timed and focuses the attention of everyone fully. I told them in advance I would do 10 then record their percentages." Comment recorded on the 16 March 'Starter of the Day' page by Mrs A Milton, Ysgol Ardudwy: "I have used your starters for 3 years now and would not have a lesson without one! Fantastic way to engage the pupils at the start of a lesson." 


Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. Click here for more activities designed for students in upper Secondary/High school. 

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments. 