What is the net effect when two waves interfere with each other? The lesson plan answers this question by helping the class visualize waves through graphing. Pupils graph individual waves and determine the effect of the interference...

Using a miniature coral reef aquarium kit, young ecologists model this unique ecosystem. They research various coral reef organisms and their niches, and they culminate the project by working together to write a report. Use this activity...

Young mathematicians connect vectors to geometric shapes by watching a video that expresses vectors in relation to the sides of geometric figures. They then apply what they learned by completing a worksheet of practice questions.

Put the graph into graphing and allow learners to understand the concept of point plotting and how it relates to data. The worksheet provides a nice way to connect data analysis to a graph and make predictions. The worksheets within...

The experiment known as one of the most beautiful experiments in biology changed the way we think about DNA. Learn about the experiment and the scientists who designed it—as well as the scientists who built on the results—with an online...

Learners conduct research on 1830s families and early New England culture. They conduct research on the Old Sturbridge Village website, participate in an online chat with a costumed interpreter, and continue to develop possible plots to...

There's a fine line between diplomacy and propaganda. Young historians consider that boundary by examining documents from the Cold War, including memorandum about the lunar program and Peace Corps in addition to a propaganda film. Using...

For this substitution formula worksheet, students solve 9 various types of problems related to applying the substitution formula. First, they use a number line to add or subtract negative integers. Then, students substitute numbers for...

Young scholars explore the concept of adding integers.  In this adding integers instructional activity, students simulate the battle of the 300 spartans at Thermopylae.  Young scholars use colored game pieces to represent...

Students improve their multiplication skills by completing the multiplication equations for facts 2, 5, and 10. In this multiplication facts lesson plan, students use different colored markers to mark on a number line and skip count by...

In this rounding worksheet, students round three digit numbers to the nearest hundred. Students round 20 numbers to the nearest hundred.

In this addition worksheet, 1st graders complete 30 problems in which they add a single digit number to another digit number; there is no regrouping needed. They enter their answers in the boxes and submit them on-line

In this addition worksheet, 3rd graders complete 30 problems in which they add a two digit number to a two digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this addition worksheet, 3rd graders complete 30 problems in which they add a two digit number to a two digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this addition worksheet, 2nd graders complete 30 problems in which they add a single digit number to another single digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this addition learning exercise, 2nd graders complete 30 problems in which they add a single digit number to another single digit number using regrouping as needed. They complete 2 problems in which 10 is an addend. They enter their...

In this addition worksheet, 3rd graders complete 30 problems in which they add a single digit number to another one digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this addition activity, students complete 30 problems in which they add a single digit number to a two digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line.

For this addition worksheet, students complete 30 problems in which they add a single digit number to a two digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this addition instructional activity, 3rd graders complete 30 problems in which they add a single digit number to a two digit number using regrouping as needed. They enter their answers in the boxes and submit them on-line

In this number sense activity, students compare three digit numbers and identify the greatest one. Students complete 12 problems.

Students find zero pairs and add integers using zero pairs and a number line. They generalize rules for adding integers. The class view approximately 10 minutes of video divided into three segments.

In this adding worksheet, students read one numeral plus another numeral and circle the corresponding numbers of balls and then read the total number plus one numeral, circle the corresponding balls, and write the numeral in the...

Second graders practice two-digit addition with regrouping. In this addition lesson, 2nd graders use craft sticks to solve two-digit regrouping problems. Students solve problems on the chalkboard.