Young mathematicians learn how to solve problems involving stratified sampling. They review concepts of sampling and proportionality by watching a video and then they complete a worksheet of questions on this topic.

[Free Registration/Login Required] This site houses worksheets that have been prepared for both ELL students and students who are learning to speak Spanish as their second language. Most of the worksheets focus on the phonetics of the...

Great exercise for practicing the verbs "ser" and "estar" in the present tense. Choose the correct verb conjugations to complete the sentences, and immediately receive the answer and the reason for its use.

This learning module reviews information about the use of Spanish adjectives and provides additional review links. Additional quizzes are provided at the conclusion of the lesson.

Practice conjugating verbs with this article on domestic violence. Fill in the blank with the correct form of the verb in the designated tense: imperfect subjunctive, preterite, or imperfect. Answers may be checked at the end of the...

Practice conjugating verbs in this article on the role of women in modern marriage. Fill in the blank with the correct form of the verb in the designated tense: present, present subjunctive, future, preterite, imperfect, or a gerund....

Great explanation of Spanish adverbs and how to form "-mente" adverbs from adjectives. Matching, fill-in-the-blank, and multiple choice exercises provide sufficient practice. Answers may be verified after each quiz. Tutorials in other...

Vast array of quizzes and self-study exercises based on idioms and idiomatic expressions, categorized in a variety of ways (beginning with A, B, etc., by keyword, or by association with other groupings). Great practice for the ELL/ESL...

Great practice with idioms that use the verb "estar". Also provides practice conjugating the verb in present, preterite, imperfect, future, and conditional tenses--a different practice test for each tense. Answers may be verified after...

Through this online exercise, students learn the parts of the body. Read the questions, view the picture and type in your response. To check your answer just click on the drop down arrow next to "Respuesta" (answer).

In this exercise, students practice using the prepositions "por" and "para". Read the sentences, view the picture and type in your response. To check your answer, listen to the audio or click on the drop down arrow next to "Respuesta"...

Test your knowledge of Spanish and complete 60 online multiple choice questions. If you're having trouble or need an explanation, you can fill in the required fields at the bottom of the quiz, and you will receive a response by email.

This site is provided for by the Colby College. Practice with several different examples of regular and irregular comparisons of adverbs, verbs, nouns, and adjectives. Read the sentences and select the correct comparative. Help is given...