Science Fair

Project planning, topic selection, lab notebooks, exhibits, posters, presentations and evaluation.

5articles

Duas garrafas PET transparentes com sensores de temperatura sobre uma mesa, uma aberta e outra coberta com filme plástico, com globo terrestre e esquema climático ao fundo.

Science Fair12/09/20266 min read

Greenhouse Effect Bottle Experiment: What It Shows — and Where the Model Misleads

A school protocol using two bottles to measure warming, control variables, and explain why the setup is not a faithful replica of the atmospheric greenhouse effect.

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Filtro caseiro em garrafa com camadas de carvão, areia, cascalho e algodão filtrando água turva ao lado de amostras com diferentes graus de transparência.

Science Fair12/09/20267 min read

Does a homemade sand-and-charcoal filter clean water? An experiment to measure turbidity without calling it potable

A science-fair protocol for testing a sand-and-charcoal filter with standardized photos, a relative turbidity scale, and one essential rule: the experimental water is not potable.

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Estudante em feira de ciências segura uma pasta diante de projetos, enquanto três caminhos visuais indicam aprovação, espera e credenciamento, com calendário e checklist ao lado.

Science Fair08/09/20266 min read

Mostratec 2026: selected, waitlisted or accredited by an affiliated fair? What to do by Sep. 30, Oct. 6, 12 and 19

See the next step for Mostratec 2026 depending on whether your project was selected, waitlisted or came through an affiliated fair, with the deadlines and documents you cannot miss...

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Estudante registra uma tentativa em caderno espiral sobre bancada de laboratório, ao lado de tubos de ensaio, béquer, microscópio e óculos de proteção.

Science Fair05/09/20266 min read

Lab notebook for a science fair: what to record in every trial

A practical logbook model for documenting repetitions, errors, variable changes, measurements, and decisions without losing the experiment’s history.

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Laptop sobre bancada de laboratório exibe gráfico de barras, linha, dispersão e tabela, cercado por materiais de ciência e exemplos de erros de escala.

Science Fair02/09/20266 min read

Table or graph for a school experiment: how to choose without distorting the data

Learn when to use a table, bar chart, line graph or scatter plot in a school experiment and how to avoid scales and axes that distort the result.

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