Can fruits generate electricity? From lemon batteries to supercapacitors.
Discover how fruits generate electricity, from lemon batteries to durian and orange supercapacitors, and the challenges of lithium batteries.
Science
How to teach basic fractions using manipulatives
Discover how to teach basic fractions using manipulatives, following the BNCC (Brazilian National Curriculum) and research in mathematics education.
How to solve inequalities with fractions: a complete and practical guide.
Learn how to solve inequalities with fractions using sign analysis, practical examples, and essential tips to avoid mistakes in the denominator.
How to solve math problems using logical reasoning.
Learn how to solve math problems using logical reasoning, step by step, with practical examples and tips for tests and exams.
How to represent fractions graphically: a complete guide and examples.
Learn how to represent fractions graphically with examples, figures, and a number line. A complete guide to studying or teaching fractions visually.
How to teach equivalent fractions to third-grade students.
Learn simple and fun strategies to teach equivalent fractions to third-grade students with confidence and security.
How to teach the conversion of fractions to decimals
Learn, step by step, how to teach the conversion of fractions to decimals with practical examples and simple language.
How to solve fraction problems in mathematics
Learn how to solve fraction problems with examples, types of fractions, and clear step-by-step instructions for use in school and exams.
What is the decimal number system (base 10)?
Understand the decimal (base 10) number system, its characteristics, place values, classes, and its relationship with binary, octal, and hexadecimal.
What are the axioms of probability? Full explanation.
Understand Kolmogorov's axioms of probability, their properties, and practical examples in a clear and comprehensive explanation.
How to estimate the sum and difference of fractions in practice.
Learn how to add, subtract, and estimate fractions in a simple way, with practical examples, tricks, and clear explanations to use at school and in everyday life.
How to multiply rational fractions with two variables
Learn, step by step, how to multiply and simplify rational fractions with two variables, and understand when to use cross-multiplication or the LCM (Least Common Multiple).