Third grade math requires students to master the basic concepts of arithmetic in order to begin the study of geometry. In addition, third graders will work with integers through the hundred-thousands, and will learn how to work with decimal places and fractions up to the hundredths. Third grade math lessons can focus on the context of money, using clocks and calendars, and understanding temperature scales. Other areas of study include patterns with odd and even numbers and various word problems using arithmetic.
To help your class with fractions, give each student the same fraction. With construction paper, cut out a shape to represent the fraction, such as a rectangle. Using a ruler, divide the shape into the number of segments shown in the denominator of the fraction. If the denominator in the fraction is four, for example, divide the rectangle into four equal spaces. Using a different colored paper, cut out the same shape as the original. In addition, cut out the segments of the fraction so they are the same size as the segments drawn on the original. Glue the piece or pieces onto the original shape to match the numerator and make a fraction collage.
An alternative activity for practicing math skills with third graders is to create blueprints for a house. Rudimentary architecture can be a great way to learn various mathematical concepts, such as geometry of shapes.
The study of science in the third grade includes science processes and science concepts. In the former, students are introduced to the scientific method by performing simple experiments and measuring the results. Science concepts include the relationships between planets, the interaction of organisms within the food chain, the different states of matter, and the forces of gravity and magnetism.
To introduce students to the idea that compounds can interact and make a new solution, help them make their own simple, effective and environmentally friendly glass cleaning product. In a mixing bowl, combine 1/2 cup of vinegar with 1/2 cup of water, then add 1/2 cup of rubbing alcohol. Add 1 tbsp. of lemon juice and mix for two minutes. Using a funnel, pour the mixture into a reused (and thoroughly washed) spray bottle. Spray onto a glass surface and wipe with a cotton rag to demonstrate the effectiveness of the homemade glass cleaner for the students.
To help students understand the states of matter, post a variety of pictures on a board. Include, for example, pictures of water, steam coming out of a kettle, and an ice cube. Have the students arrange the pictures into three columns depending on whether they show a solid, a liquid or a gas.