Plants need light to grow. No duh! Specifically, plants need a certain number of photons of specific wavelengths from the blue and red end of the spectrum to take apart water and carbon dioxide molecules to make more plant. The middle bit is reflected back and so plants look green.
Word problems are the bane of most math students, and why not. This is where mathematics, language arts, logic and the real world all intersect.
Translate the problem into math-ese
Solve the equations
Operation words
Benford's Law (also known as the first digit law) states that the first digit from most real life data follows a logarithmic distribution. This means that the first digit will be 1 30% of the time, 2 18% of the time, and so on to 9 appearing 5% of the time. This can be used as a good check to see if the data that you are using is biased or not.
Completely analyse functions to degree 5 Use synthetic division to factor functions
The students should be familiar with bar charts, pie charts, scatter plots, stem and leaf plots, Box and Whisker plots and histograms, both how to produce them and how to extract data from them. They should also know when to use each, and when not to. Shodor interactives has a number of activities on various graphs and charts
A quadratic equation is a second order (the highest power of the variable is 2) polynomial equation of 1 variable. It is typically written either as $y = ax^2 + bx +c$ or $y = a(x+k)^2 +c$ When graphed, it forms a parabola, with a single vertex (maximum or minimum point) and 0, 1, or 2 real roots (points where the graph crosses the x axis). In real life, we find this equation when dealing with ballistics, engineering, and optics. It also turns up in economics.
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