Mathematics
Math on Lessons runs from first counting at ages 3 to 5 through every school year to first-year university. It covers number, shape and space, algebra, data and chance, and calculus. Topics include fractions, the Pythagorean theorem, quadratic equations, math for the Israeli bagrut at three, four and five units, and linear algebra. Lessi, an AI teacher, teaches each one live.
- Topics
- 101
- Ages
- Early years – Grade 12
- Areas
- 5
Areas of Mathematics
By age
Topics in Mathematics73–96 of 100
- What is the derivative of a function at a point?The derivative of a function at a point is the instantaneous rate of change of the function at that exact input. Geometrically, it is the slope of the tangent line to the…Read the topic
- How do you differentiate a polynomial?Differentiating a polynomial involves applying the power rule to each term individually. Multiply each coefficient by its variable's current exponent, reduce that…Read the topic
- When do you use the product, quotient and chain rules?You use the product rule when two variable expressions are multiplied together, the quotient rule when one variable expression is divided by another, and the chain rule…Read the topic
- How do you find the equation of a tangent to a graph?To find the equation of a tangent to a graph, find the y-coordinate by plugging the x-value into the original function, find the slope by plugging the x-value into the…Read the topic
- How do you find intervals of increase and decrease and points of extremum?To find intervals of increase and decrease and points of extremum, calculate the first derivative f'(x), set it equal to zero, and solve for candidate values. Test the…Read the topic
- How to find inflection points?You can find an inflection point on a function by calculating the second derivative, setting it equal to zero, and solving for x. Next, check whether the second…Read the topic
- How do you find velocity and acceleration from position?To find velocity from a position function s(t), take its first derivative with respect to time: v(t) = s'(t). To find acceleration, take the derivative of velocity, which…Read the topic
- How do you find an antiderivative?Finding an antiderivative of a function means reversing the process of differentiation. For any polynomial term ax^n, add 1 to the exponent and divide the coefficient by…Read the topic
- How to find the area under a curve?You find the area under a curve y = f(x) above the x-axis between two vertical lines x = a and x = b by evaluating the definite integral of f(x) from a to b. First find…Read the topic
- How do you find the area below the x axis?To find the geometric area when a curve lies below the x-axis, calculate the definite integral over the interval and take its absolute value. Because the definite…Read the topic
- How to find the area between two curves?You calculate the area bounded by two curves by integrating the difference between the upper and lower functions. First, identify their intersection points to set your…Read the topic
- How to find a function from its derivative and a point?To recover the original function, integrate its derivative to get an equation with an unknown constant C. Then, substitute the coordinates of the given point into this…Read the topic
- How do you integrate roots and powers?Integrating expressions with roots and powers begins by converting roots into fractional exponents and reciprocals into negative exponents. Next, apply the power rule:…Read the topic
- How do you find the volume of a solid of revolution?To find the volume of a solid of revolution rotated around the x-axis, slice the shape into infinitely thin circular discs of radius r = f(x) and thickness dx. The volume…Read the topic
- How do you prove a trigonometric identity?To prove a trigonometric identity, choose one side—usually the more complicated one—and rewrite it step by step until it matches the other side exactly. Convert all…Read the topic
- How do you solve a trigonometric equation over a full period?To solve a trigonometric equation over a full period, find the first solution using the inverse trigonometric function on a calculator. Then find the second solution…Read the topic
- How do you find the asymptotes of a rational function?You find asymptotes of a rational function by checking vertical and horizontal behaviors separately. For vertical asymptotes, set the denominator to zero; values that do…Read the topic
- How do you differentiate root and exponential functions?To differentiate a root function, rewrite the root as a fractional exponent and apply the power rule, so the square root of x becomes one half times x to the negative one…Read the topic
- How do you differentiate natural logarithm functions?To differentiate natural logarithm functions like ln(x), use the basic rule d/dx[ln(x)] = 1/x for x > 0. If an expression u(x) sits inside the logarithm, apply the chain…Read the topic
- What is a definite integral?A definite integral represents the signed area between a graph and the horizontal axis between two boundaries. To calculate it, find an antiderivative of the function,…Read the topic
- How do you find the angle between two vectors?To find the angle between two vectors, calculate their scalar product and divide it by the product of their lengths. The result is the cosine of the angle between them.…Read the topic
- How do you standardize a measurement?You standardize a measurement by subtracting the distribution mean from the raw score and dividing the difference by the standard deviation. This calculation produces a…Read the topic
- How do you add two vectors?You add two vectors geometrically by placing the tail of the second at the head of the first, drawing the resultant vector from the initial tail to the final head.…Read the topic
- How to write a vector as a linear combination?You can write any vector as a linear combination of two non-parallel vectors by setting the target vector equal to a sum of scalar multiples: w = c₁u + c₂v. Then separate…Read the topic
Private teachers for Mathematics
Teachers on Lessoons, online or face to face. Each profile opens on the Lessoons site.
Featured teacher דביר הראלMathematics teacher₪200 / hourרמת גןבואו להתחיל איתי את השנה החדשה בתחושת ביטחון עצמי והבנה מעמיקה של החומר! אצלי גדלים מנצחים. אני הייטקיסט בעל רקע רב שנים בהוראת מתמטיקה בתיכון, מדעי המחשב ואנגלית.Full profile
גל חכם אהרוןMathematics teacher₪150 / hourירושליםבוגרת תואר ראשון במשפטים ובכלכלה מהאוניברסיטה העברית, ומרצה במכינה האוניברסיטאית של האוניברסיטה העברית.Full profile
אופיר מאגדיMathematics teacher₪200 / hourתל אביב -יפופרונטלי+ZOOM. הכנה מהירה ותכליתית לבחינה! מורה פרטי מצוין!!! רק למקצועות: המימון, ניהול פיננסי, שוק ההון ושמאות מקרקעין. יש מאות המלצות!Full profile
אבירם יעקביאןMathematics teacher₪230 / hourראשון לציוןבוגר מתמטיקה בהצטיינות מהטכניון, מרצה ומתרגל מצטיין. בעל ניסיון עשיר ורב שנים. מלמד מתמטיקה בגובה העיניים, סבלני ואיכפתי:)Full profile
יוחאי אMathematics teacherרמת גןסטטיסטיקאי ומוסמך MBA מסייע בעיבודים סטטיסטיים ומעביר שיעורים פרטיים (ליחיד או לקבוצות קטנות).Full profile
שי קמחיMathematics teacher₪200 / hourחיפהבוגר תואר שני עם שנות ניסיון בהוראה , רצון גדול להוביל להצלחות. .Full profile
בנימין דוידובMathematics teacher₪120 / hourאשקלוןמורה פרטי למתמטיקה/פיזיקה מזה כשבע שנים המלמד בצפון ובדרום - מגיש לבגרויות בכל הרמות טלפון - **********Full profile
יובל שפיראMathematics teacher₪80 / hourעתליתיובל, בת 23 מעתלית, בוגרת 5 יח״ל מתמטיקה בציון 95, בעלת ניסיון בהדרכה והוראה. מציעה תגבור, הכנה למבחנים וחיזוק הבסיס. סבלנית, אחראית וניידת עם רכב 😊Full profile
About Mathematics
Math here follows the Israeli school years, one step at a time. Young children count to five on their fingers, find one more and one less, and name circles, squares and triangles. In grades 1 to 6 they work with numbers to 20 and to 100, multiplication and division, fractions, decimals and percentages, and the area and perimeter of a shape.
From grade 7, letters join the numbers. Students solve linear equations, then quadratic equations, and meet the Pythagorean theorem and trigonometry in the right triangle. High school brings probability, derivatives, and the bagrut courses at three, four and five units. For first-year university there are single-variable calculus, linear algebra, and statistics and inference.
Every topic is a live lesson with Lessi, an AI teacher. Lessi explains on a board, out loud, stops for short quizzes, and moves at the student's pace. When a homework question gets stuck, Ask Lessi can answer it. The first 60 minutes are free with an account, and the topic pages have free printable worksheets.
Common questions
What ages is the math here for?
From age 3 to university. The early years start with counting and shapes for ages 3 to 5. Then every school year from grade 1 to grade 12 has its own topics, from numbers to 20 up to the bagrut courses. First-year university students will find calculus, linear algebra, and statistics and inference.
Can my child learn algebra online with Lessi?
Yes. Algebra starts in grade 7 with turning words into expressions and solving linear equations with the balance principle. In grade 9 it moves on to factoring, the quadratic formula and the parabola. Lessi teaches each step live, on a board and out loud, and checks understanding with short quizzes before going on.
Are there free math worksheets?
Yes. Each math topic page has free printable worksheets, so a child can practice on paper away from the screen. They follow the same topics as the lessons, from counting and times tables to fractions, equations and trigonometry.
Does it help with the math bagrut?
There are courses for the math bagrut at three and four units in grade 11 and at five units in grade 12. They cover topics such as sequences, the sine and cosine rules, investigating a function through its derivative, trigonometric equations and the natural logarithm. Lessi works through them with the student, at the student's pace.
How much does it cost to try?
The first 60 minutes of lessons with Lessi are free with an account. Ask Lessi answers math questions free with an account too, from the same free minutes. The printable worksheets on the topic pages are free.