Last week, we completed the sum and product of roots of the equation worksheet and few questions from Textbook. Students are thorough with how to use sum and product of roots to frame a quadratic equation.
We also completed simultaneous equations involving linear and quadratic functions. By solving these two equations simultaneously, the solution we get in form of coordinates are nothing but intersecting points of linear and quadratic functions. These two functions either meet at two distinct roots or only at one point (then the line is called a tangent). When these two functions do not meet, they have imaginary solutions.Ãƒâ€šÃ‚Â Students solved worksheet and exercise from textbook.
We also did an activity where students were asked to match the different parabolic shapes with the discriminant values. This activity helped them in relating the discriminant value and the parabolic graphs.
Students also revised the basic terminology and the parts of a parabolic shape (vertex, maximum and minimum points, axis of symmetry, roots and y-intercept). We solved questions were students had to find the y-intercepts, x-intercepts and axis of symmetry from the given quadratic equations.
Last week, Ãƒâ€šÃ‚Â we covered the third method of constructing a scatter plot ‘ least squares regression method’. Students explored this method using formula method and learnt to solve the problem showing all necessary steps. After this students also explored this method using GDC and then forming a regression equation to predict the future relationship between two variables.
Students were also taught coefficient correlation ‘r’ which helps in knowing how close relationship two variables have. It also shows the linear relationship between two sets of data.Ãƒâ€šÃ‚Â The results are between -1 and 1. Ãƒâ€šÃ‚Â After calculating r using formula, we get a number somewhere in between those values. The closer the value of ‘r’ gets to zero, the greater the variation the data points are around the line of best fit.
Students solved all the textbook exercises using formulae method and GDC.
A worksheet consisting all type of problems based on Bivariate Analysis chapter is given as homework to students and we will have a formative assessment on the same topic on 18th December,2014.
Krishna and Deepak
For homework- Do the revision for coming assessment .please see the dates according to your section . Dates and curriculum have been posted before go through it.
Please refer to the appended message from Yash Lekhwani(Secretary General, FSMUN’15) and attend(if interested) the MUN session to be conducted on Monday.
The FSMUN Secretariat will be having a session regarding some basics of the MUN and an introduction on how to start with your research. This session will take place on Monday, 15th December from 10:00 AM to 10:30 AM in the Senior Library.
All students who are interested can attend the session. It is imperative that all first-time MUNÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢ers attend this session as this will give them a brief about the conference.