This task is a refinement of ``Carbon 14 dating'' which focuses on accuracy. Because radioactive decay is an atomic process modeled by the laws of quantum mechanics, it is not possible to know with certainty when half of a given quantity of Carbon 14 atoms will decay. This type of question is very important in science and it also provides an opportunity to study the very subtle question of how errors behave when applying a function: in some cases the errors can be magnified while in others they are lessened.

This problem involves solving a system of algebraic equations from a context: depending how the problem is interpreted, there may be one equation or two.

This task is a somewhat more complicated version of "Accurately weighing pennies I'' as a third equation is needed in order to solve part (a) explicitly. Instead, students have to combine the algebraic techniques with some additional problem-solving (numerical reasoning, informed guess-and-check, etc.)

This site has a series of pre-made free lesson plans that are ready to teach right away. MATH, ELA, SCIENCE, SEL, CAREER, ART, DIGITAL LITERACY, TECH, STEM

They have clips of popular movies and TV shows built right in - and you are allowed to use them bc the site is made by AT
&T and Warner Bros.

"The Achievery helps connect students to a new world of digital learning through stories that spark curiosity and content that entertains as well as teaches."

Don't miss checking this one out! You can use the filters to find exactly what you need.

Copy and paste this url into a browser to watch a short 1 min intro video - https://youtu.be/w-y0u82ps3o

You will have to sign up to access the lessons but it's totally worth it.

In this activity, students explore the effect of chemical erosion on statues and monuments. They use chalk to see what happens when limestone is placed in liquids with different pH values. They also learn several things that engineers are doing to reduce the effects of acid rain.

Students are introduced to the properties of acids and bases, as well as how to name them. This lesson
takes place over two class periods usually. We begin by discussing what students know about acids and
bases. We try to create a student generated list of features. This has ranged from a very small list to
large list in the past, depending on student experiences. Next, I give a lesson on the definition of acids
and bases, followed by some properties. Next, students use a lab to experience and determine which is
an acid or a base (and the relevant strengths) using a stations lab.
Following the lab, students may choose to work in groups or with me in a smaller group on naming and
writing formula for acids and bases. They then practice naming and correct as a group.

How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?

How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?

Developed for third grade. Students will:; understand the damaging effects of acid rain on the environment.; understand the damaging effects of acid rain on plants.; pose a hypothesis and use the scientific method.Biology In Elementary Schools is a Saint Michael's College student project. The teaching ideas on this page have been found, refined, and developed by students in a college-level course on the teaching of biology at the elementary level. Unless otherwise noted, the lesson plans have been tried at least once by students from our partner schools. This wiki has been established to share ideas about teaching biology in elementary schools. The motivation behind the creation of this page is twofold: 1. to provide an outlet for the teaching ideas of a group of college educators participating in a workshop-style course; 2. to provide a space where anyone else interested in this topic can place their ideas.

Students conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects.

Students are introduced to the differences between acids and bases and how to use indicators, such as pH paper and red cabbage juice, to distinguish between them.

Students play and record the “Mary Had a Little Lamb” song using musical instruments and analyze the intensity of the sound using free audio editing and recording software. Then they use hollow Styrofoam half-spheres as acoustic mirrors (devices that reflect and focus sound), determine the radius of curvature of the mirror and calculate its focal length. Students place a microphone at the acoustic mirror focal point, re-record their songs, and compare the sound intensity on plot spectrums generated from their recordings both with and without the acoustic mirrors. A worksheet and KWL chart are provided.

La ressource propose une fiche pédagogique et une capsule vidéo présentant une expérience d'ondes stationnaires en acoustique, ce qui permet la détermination de la longueur d'onde du son.

This lesson employs direct instruction and small-group discussion to help students learn new vocabulary skills while reading Patricia Polacco's "Pink and Say".

This lesson gives students a better perspective as to how acreage is determined. Using the computer in their pocket students learn to calculate area in feet and acres. Using their results the can calculate biomass, board feet per acre, or even the amount of electrical fencing needed to protect a meadow.

A boy and his family endure a difficult nine-week journey across the ocean and survive the first winter at Plymouth. Based on true events, "Across the Wide Dark Sea" poetically narrates a young boy's account of risking the ocean to find religious freedom in a new land.

This online tool enables students to learn about and write acrostic poems. Elements of the writing process are also included.

Students create acrostic poems using their names and the names of things that are important to them.

Centre for Addiction and Mental Health.

Explains types of aggressive behaviour, identifies related factors, distinguishes between normal and concerning behaviour, and gives advice on how to address aggression in youth, including proven prevention and intervention strategies