Picking Numbers Some questions on the ACT can be made easier by plugging in real numbers in place of variables. Picking numbers can give a student a more intuitive understanding of the problem, instead of keeping things very theoretical. When choosing numbers for a problem, it can be helpful to try and identify: what is…

Solving Equations Basic Skills Distribute. Distributing involves applying a leading coefficient or sign to all of the terms within a pair of parentheses or other grouping of numbers/variables. For example, when a -5 is put in front of the binomial (x + b), it affects both of those terms, even though when it is written…

Linear Equations/Slope Key Skills Calculate Slope from Two Points If given two points on a line, a student should be able to calculate the slope of that line. The phrase often used to teach this is “rise over run”. Calculate the change in y values and divide it by the change in x values. (y2…

Exponents The main test with exponents is to know when to perform the core three math operations to exponents: Three Main Exponent Operations Exponents are added together when we those exponents share the same base number and that number is multiplied by itself x2 • x5 = x5 + 2 = 7 = x7 Exponents are subtracted together when we those exponents share the same…

Percents Percents express what the numerator of a fraction would be if the denominator was 100 (80% = 80/100). 100 is the standard base, and whenever a student is thinking about percentage questions, they must always want to think about that idea of the base. It is possible to have percentages of numbers other than 100.…

Probability The probability of an event occurring is equal to the number of successful outcomes (outcomes that fulfill the pre-set criteria) divided by the number of potential outcomes. For example, to calculate the probability of drawing a red skittle from a bag of skittles, a student will need two pieces of information: The probability of drawing…

Average The average of a data set is also known as the arithmetic mean. The mean is equal to the sum of all the data points divided by the number of data points in the set.  How Does It Appear on the Tests

Fractions Fractions can be expressed in two different ways: There are four different ways that fractions can interact: addition, subtraction, multiplication, and division.  For the first two (addition and subtraction), each fraction needs to have the same denominator, known as a common denominator. Once the fractions have the same denominator, they can be added or subtracted as…

Shortcut to the ACT Math Section We can never know what exactly is going to be on the ACT Math section, but each test draws from a similar bank of concepts and terms. This is great news, because it means if you know you tend to struggle on the ACT math section, you can look…

Topic 11.4 Sexual reproduction Topic 11 Weightage : 8%  All Questions for Topic 11.4 – Gametogenesis, Reproductive Tissue, Egg and Sperm, Animal Fertilization, Human Fertilization, Embryo Development, Human Chorionic Gonadotropin, Placenta, Birth Process, Gestation Periods, Semen Production, Amniotic Sac View Post