# Nikimath's Shop

Hello teachers friends! My name is Niki.I have been teaching mathematics for over 20 years. My subjects are Algebra through Calculus 3 along with Geometry, Trig and Differential Equations. My passion is to create engaging fun and rigorous math resources of high quality for teachers and students. My products include partner and group activities, matching and sorting activities, multiple-choice games, rigorous worksheets & lessons, challenging independent practice, homework assignments, etc.

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Hello teachers friends! My name is Niki.I have been teaching mathematics for over 20 years. My subjects are Algebra through Calculus 3 along with Geometry, Trig and Differential Equations. My passion is to create engaging fun and rigorous math resources of high quality for teachers and students. My products include partner and group activities, matching and sorting activities, multiple-choice games, rigorous worksheets & lessons, challenging independent practice, homework assignments, etc.

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#### Graphing Quadratic Inequalities - Multiple - Choice & Matching Activity

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This activity provides students practice with graphing quadratic inequalities. On each slide/page, students are given five quadratic inequalities and one graph. Students have to choose the inequality which represents the given graph (to match the graph with the correct inequality). There are 5 graphs of quadratic functions with the leading coefficient a&gt;0 and 5 graphs of quadratic functions with the leading coefficient a&lt;0. The quadratic inequalities are of all types - including equal to and not equal to inequalities. All functions are given in standard form. There are included two slides/pages with empty text boxes provided where students can record and justify their answers. Answer keys are included. NOTE: This product is created as a Google Slides product. I have converted it to PDF item here.

#### Factoring by Grouping - Partner Activity (Solving a problem in 2 different ways)

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Students will factor polynomials with four terms using the factor by grouping method in this collaborative partner activity. It consists of 12 sections as in each section students are given one and the same problem. Partner A is instructed to group the first two terms together and then to group the last two terms together, while Partner B is instructed to group the first and third terms together and then to group the second and forth terms together. Thus partners see that factoring by grouping problems can be approached at least in two different ways. In the next section students are given the next problem as this time Partner A is instructed to group the first and third terms together and then to group the second and forth terms together and Partner B is instructed to group the first two terms together and then to group the last two terms together. Then, in the same manner as in section 1, Partner A groups the first two terms together and …etc. I hope your students will love this activity and find it enjoyable and helpful. The practice sheets provide room for students to show work. Full solutions are included.

#### Linear Systems with 3 Variables - Partner Activity "Get the Same Answer"

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In this 12 questions - partner activity, students will solve systems of linear equations with three variables. The problems are adaptable to all methods ( elimination, substitution, Gaussian elimination, Cramer’s Rule) so the teacher or students can choose the methods they will use. All systems have one and only one solution ( All systems are consistent and their equations are independent)! The answer of each of Partner’s A problems are the same as the answer of each Partner’s B corresponding problem. (Problems A1 and B1 are corresponding, so as problems A2 and B2 and so on). Students are instructed to check whether their results match. If their answers don’t match, they work together to figure out what went wrong. Student recording sheets and answer keys are provided.

#### Dividing Polynomials Using LONG DIVISION-Partner Activity"Get the Same Quotient"

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This is a collaborative partner activity on dividing polynomials using long division. Dividends are polynomials of third, forth, fifth and sixth degree and divisors are binomials and trinomials of first, second and third degree. This activity takes each partner through 12 problems (12 sections). Partners corresponding problems are similar (problem 1A is similar to problem 1B, problems 2A is similar to problem 2B and etc). Students must get the same quotient and different remainders. They record their answers on partners’ response sheet. A recording sheet is also provided. Answer keys are included.

#### Composition of Functions - Partner Activity

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In this partner activity, students will practice composition of two functions. The composite functions are notated two different ways: f(g(x)) and (f o g)(x). There are included linear, quadratic, rational, radical, absolute value, trigonometric and exponential functions. There are 10 sections as in each section partners are given two functions. In section 1, Partner A has to find f(g(x)) and Partner B has to find g(f(x)). In section 2 Partner A has to find g(f(x)) and Partner B – f(g(x)). In section 3, Partner A again has to find f(g(x)) and Partner B – g(f(x)) and so on. Students find out that in each section they get quite different results and understand that it is important to be careful which function comes first. The practice sheet give room for students to show work. Answer keys are included.

#### Parallel Lines Cut by a Transversal - 27 various practice problems

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This is a engaging practice on solving problems on parallel lines cut by a transversal. There are 9 slides of problems with given diagrams as there are three problems per slide. The first nine problems (1-9) are two parallel lines given cut by a transversal. Students have to make an equation and solve it for the variable x and find the measures of angles alpha and vita. The next six problems (10-15) are finding the measures of two pairs of four congruent angles given a relation (an equality) between the angles. The problems from 16 to 21 are two parallel lines given cut by two transversal as they form a triangle. Students have to find the variable x and the angles of the triangle formed. Problems from 22 to 24 are parallel lines cut by two transversals as they form a quadrilateral. Students have to find measures of angles x,y and z. And the last three problems (25-27) are parallel lines cut by two transversals as one of the lines is a bisector. Students have to find the measure of angle alpha. The resource can be used as independent practice or group activity, extra practice, enrichment and homework assignment. Students are provided with a table where they can record their answers. Answer keys are contained at the end of this document.

#### Calculus Thanksgiving Review - "Turkey Hunting" Matching Game

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This fun Thanksgiving themed activity will help students review such topics as ♦ first, second and higher order derivatives ♦ intervals of increasing and decreasing ♦ critical points and local extrema The functions included are polynomial, rational, radical, trigonometric, inverse trigonometric, exponential, and logarithmic (common and composite functions). The problems covers all the basic derivative rules, including power rule, product and quotient rules and chain rule. Activity Directions: Students work through 15 problems. All the answers are written on 15 of 18 turkeys on a given picture. Every time students arrive at a correct answer, they will “get the turkey” having this answer written on it. Students are asked to find three happy turkeys who can NOT be caught. The product can be possibly used as a partner or a group activity (group of 3). Student recording sheets and the answer key are provided. I wish you very happy and blessed Thanksgiving!

#### Dividing Polynomials (No Remainders) - Maze

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This is an American birds themed maze on dividing polynomials (no remainders). Students start solving and use each answer to navigate through the maze. Students will need to solve 12 problems properly to complete the maze. Students can draw a (colored) line to display their answer path. It would be nice if students show work on this activity. Answer keys are included. NOTE: This product is created as a Google Slides product. I have converted it to PDF item here.

#### Simplifying Rational Expressions - Maze

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This is a soccer balls themed maze on simplifying rational expressions. Students start solving and use each answer to navigate through the maze. Students will need to solve 12 problems properly to complete the maze. Students can draw a colored line to display their answer path. Answer key is included. NOTE: This product is created as a Google Slides product. I have converted it to PDF item here.

#### Exponential Equations (Level 2) - Group Activity (40 equations)

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This product is designed to be used for groups of 2, 3 and/or 4 members! It practices solving exponential equations with different bases using the properties of exponents and square roots without using logarithms. All the equations are of type “EXPONENTIAL FUNCTION = REAL NUMBER” and result in linear. There are included many examples where the base of the exponential function is a decimal, a fraction or an irrational number/square root. Activity Directions: Partners will each have their own set of 10 exponential equations. They start solving and write down the solutions of the problems on the recording sheet provided or on a separate sheet of paper. Then students look for the numbers they have found on the “keyholes board” - a set of keyholes given with numbers on them. They find some of their answers written on the keyholes, so they get the correct keys to “unlock” them. Partners mark the “unlocked keyholes” on the board. They record which are the “unlocked keyholes” and count them. Partners show the teacher their results. The group which is ready first and who has worked correctly wins. All answer keys are included. Here is the link of my version LEVEL 1 of this product. It contains easier exponential equations where the base of the exponential function is a counting number. https://www.tes.com/teaching-resource/resource-12627174

#### Inverse of 2x2 and 3x3 Matrices - "Who is my girlfriend?" Matching Activity

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This is a fun matching activity for students to practice finding the inverse of 2x2 and 3x3 matrices. The inverse of matrix can be found using a formula (for 2x2 matrices), the augmented matrix method and/or the adjoint method ( for 2x2 and 3x3 matrices). The teacher has to decide if students will be permitted to use calculators. There are 8 questions - four 2 x 2 matrices and four 3 x 3 matrices. (All matrices selected have inverses.) Students calculate the inverse of each matrix going with a picture of a boy named. Then they look for their answers in a given table with pictures of girls’ faces and their names and find out who is the girlfriend of each of the boys. If students cut the cells of the tables, they can match the matrices and their solutions. The activity can be used individually or in pairs. Student recording sheets and answer keys are included.

#### Distance and Midpoint Formulas - Practice Sheets

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This is an engaging practice on finding the distance and midpoint between two points. It consists of two parts: Part 1 contains 9 various problems on finding the midpoint (determining the coordinates of the midpoint given coordinates of the endpoints of a segment, given coordinates of the midpoint and one of the endpoints and finding the other endpoint, parametric problems on midpoint, finding the midpoint given a graph) Part 2 contains 7 various problems on finding the distance between two points (finding the slope and length of segment given coordinates of the endpoints and given a graph, determining whether two segments are congruent, determining whether a given triangle is right and isosceles, finding the perimeter of a triangle) The practice sheets give enough room for student to show work. The product can be used as independent/extra practice, enrichment or/and homework assignment. Answer keys are included.

#### Converting Polar and Rectangular Equations - Practice A & B

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These are 50 practice problems of various difficulty on converting polar and rectangular equations. Problems A1- A25 require students convert rectangular equations to polar equations (Practice A). Problems B1-B25 require students convert polar equations to rectangular equations (Practice B). I hope that the practice worksheets give your students enough room to show their work. This resource can be possibly used as an independent /extra practice, as an enrichment and homework assignment. Typed detailed answer keys/solutions are provided.

#### Pythagorean Theorem with Other Shapes - 27 CLASSIFIED problems

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This resource contains a total of 27 practice problems and focuses on using Pythagorean theorem with other geometric shapes. The problems are classified into 5 categories as follows: A. Problems with equilateral and isosceles triangles (finding the altitude, area and perimeter of the triangle) (6 problems) B. Problems with rectangles (finding the diagonal) (6 problems) C. Problems with squares and rhombi ( finding the diagonals and the area) (6 problems) D. Problems with trapezoids (finding the diagonals, non-parallel sides, perimeter and area) (6 problems) E. Other shapes/cases (finding the area of regular hexagon and circle) (3 problems) The practice sheets give room for students to show work. Answer keys are included.

#### Polynomial Equations in Standard Form (Zeros of Polynomials) - 56 problems

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This resource contains 56 questions. It focuses on solving polynomial equations in standard form by using factoring (GCF, grouping, factoring difference of squares, sum and difference of cubes, perfect square trinomials, quadratic trinomials) and synthetic division. The problems are classified into categories according to the problem solving technique and the types of roots of polynomial equations (only real or real, imaginary and complex). There are also included quartic equations in quadratic form. ⟐ The first and second worksheets(two different variants/forms) have the students solving by factoring polynomial equations only with real solutions. These two worksheets can be used as a partner activity. (total of 16 problems) ⟐ The third and forth worksheets (two different variants/forms) are finding the real, imaginary and complex solutions of polynomial equations by factoring. These two worksheets can be used as a partner activity. (total of 16 problems) ⟐ The fifth and sixth worksheets have the students solving by factoring quartic equations only with real solutions with real and imaginary roots (total of 12 problems) ⟐ The seventh and eighth worksheets have the student solving by synthetic division polynomial equations only with real roots having real, imaginary and complex solutions (total of 12 problems) Typed answer keys are included.

#### Inverse Functions (48 problems) - Group Activity (competition)

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This is a collaborative group activity (for groups of 2, 3 and/or 4 members) on inverse functions. It consists of 12 sections as in each section there are 4 similar problems – one problem for each of the partners. The functions included are linear (in section 1);quadratic functon in standard form (section 2) ;quadratic functions in vertex form (section 3);cubic functions in the form (x+a)^3 + b (section 4);polynomial functions in the form a(x+b)^n+c (section 5); square root functions in the form a + b√(x+c) (section 6);cube root functions c + ∛(ax+b) (section 7);n-root functions (section 8);rational functions of the type (ax+b)/(cx+d) (section 9);exponential functions of the type e^(ax+b) + c (section 10); logarithmic functions ln(ax+b) (section 11); trigonometric functions of the type asin(x+b), acos(x+b), atan(x+b) and acot(x+b) (section 12) This activity may be turned into a competition between groups. In each section, it is given the certain number of points that each problem solved correctly gives. The number of points are directly proportional to the difficulty level of the problems. Students recording sheets are provided. Answer keys are included.

#### Graphing Polynomials - Partner Activity

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This is an engaging and collaborative partner activity for sketching graphs of polynomials. There are eight sections as in each section the problems of the partners are similar (problem A1 is similar to problem B1, problem A2 is similar to problem B2, etc). Partners are asked to sketch the graph of each polynomial function given and compare the graphs of each pair corresponding polynomials. They will find out that the shapes of the graphs A1 and B1 are similar, so are the shapes of the graphs A2 and B2 and so on. Partners can be given directions also to factor and compare the factored forms of each two corresponding polynomials and make conclusions. Thus they will verify that the sign of the leading coefficient, the number and multiplicity of the zeros of polynomials are determining for the shape of their graphs. There are provided coordinates grids where each axis are labeled using an appropriate scale as dictated by the problem so the sketching to become easier.

#### Finding Limits Analytically - 8 Task Cards (2 problems per card)

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There are two problems (A and B questions) on each of the 8 cards. Question A is to evaluate a limit analytically and Question B is to prove a limit’s equality. Half of the cards are 8 questions asking students to find the limits of rational and involving radicals functions as x approaches infinity. The other half of the cards contains limits where x approaches a finite number. Students are to find the limits of rational functions, functions involving radicals and trigonometric functions (some of which use the “special Limits" ( sin x /x, (1 - cos x)/ x^2)) . The limits in this activity can all be found without L’Hopital’s rule. The cards can be used as a partner or a group activity or as a review. There is a student recording sheet included. Answer keys are provided.

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