Learners view video clips demonstrating acid-fast staining procedures. Correctly stained slides are shown. The learning object includes two matching exercises.

In this animated activity, sexual reproduction in animals is contrasted with the alternation of generation lifecycle of plants.

In this animated object, learners view the "T" and "P" waves and the "QRS complex." A brief quiz completes the activity.

In this animated and interactive object, learners examine ABO blood antigens and Rh antigens and their compatibility.

In this learning activity you'll use the Empirical Rule to calculate the percentages of data between two data points.

In this learning activity you'll calculate the numeric value of an area when given the z scores.

In this learning activity you'll explore normal distribution and enter values for the mean and the standard deviation of normally distributed data and observe the resulting changes in the shape of the normal curve.

In this learning activity you'll identify and calculate the area under the normal curve specified by given z-scores.

4 stages of the plant cycle and photosynthesis

fruit characteristics