The metaphor that is popping into my head is a spare tire, that’s not full-sized and you can only drive 40 miles per hour on, and can’t take on the highway. There’s less aggregate learning time happening in the system right now.
Khan Academy’s 100,000+ free practice questions give instant feedback, don’t need to be graded, and don’t require a printer.But even this year, I think they’re not covering as much.
Green’s, Stokes’, and the divergence theoremsįrequently Asked Questions about Khan Academy and Math Worksheets Why is Khan Academy even better than traditional math worksheets?. Applications of multivariable derivatives. AP Calculus AB solved free response questions from past exams. Applying derivatives to analyze functions. Contextual applications of differentiation. Differentiation: composite, implicit, and inverse functions. Differentiation: definition and basic derivative rules. Parametric equations, polar coordinates, and vector-valued functions. 
Derivatives: chain rule and other advanced topics.
Derivatives: definition and basic rules. Prepare for the 2020 AP®︎ Statistics Exam. Inference comparing two groups or populations. Displaying and describing quantitative data. Advanced regression (inference and transforming). Inference for categorical data (chi-square tests). Two-sample inference for the difference between groups. Significance tests (hypothesis testing). Counting, permutations, and combinations. Displaying and comparing quantitative data. Non-right triangles & trigonometry (Advanced). Exponents, radicals, and scientific notation. Equations, expressions, and inequalities. Transformations, congruence, and similarity. Negative numbers: multiplication and division. Negative numbers: addition and subtraction. 
Multi-digit multiplication and division. Arithmetic patterns and problem solving. Equivalent fractions and comparing fractions. And they’re even better than traditional math worksheets – more instantaneous, more interactive, and more fun! Just choose your grade level or topic to get access to 100% free practice questions: That’s because Khan Academy has over 100,000 free practice questions.
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