Languages Online
Languages Online: Imperfect Subjunctive Ra Endings
This exercise-practice teaches students how to properly write the imperfect subjunctive endings for regular and irregular Spanish verbs. Fill in the blank with the correct form of the past subjunctive and check your answers when you...
TES Global
Blendspace: Regular Verbs
In this TES Blendspace, students will have access to twenty-four multimedia resources that will help them learn about regular verbs.
Lawrence Hall of Science
The Math Page: Skill in Algebra: Skill in Algebra: Complex or Imaginary Numbers
Clearly and thoroughly explains complex numbers. Provides example problems and exercises for students, with solutions available.
CK-12 Foundation
Ck 12: Find Imaginary Solutions
[Free Registration/Login may be required to access all resource tools.] In this lesson, students are finding complex roots of polynomials and applications of the Fundamental Theorem of Algebra. Students examine guided notes, review...
Language Guide
Language Guide: Imperfect
Learn the correct formation of the imperfect for regular and irregular verbs and practice conjugating them by clicking on the link at the bottom of the page. Audio files provide opportunity for learners to hear the correct pronunciation...
ClassFlow
Class Flow: An Introduction to the Verb Ser in Spanish
[Free Registration/Login Required] This flipchart provides an introduction to the verb ser in Spanish, focusing only on conjugation, not rules of use. It includes practice exercises, using personal pronouns to create sentences with the...
Colby College
Spanish Language & Culture: Present Subjunctive Forms (Part 3)
Completion of these twenty-four clauses provides an extensive review of regular and irregular verbs, stem-changers, and spelling changes in the present subjunctive tense. Verb infinitives are provided that need to be conjugated in the...
Help Algebra
Help algebra.com: Rationalizing the Denominator
Learn to simplify radical expressions by removing radicals from denominators. The demonstration includes both single radicals and binomials that require the use of a conjugate.
Math Notes and Math Tests
Pre Calculus Notes: Finding Zeros of Polynomial Functions [Pdf]
Students learn how to find the zeros of a polynomial function. Topics include rational zero test, factoring, and conjugate pairs of zeros. Techniques and examples are included
Math Notes and Math Tests
Pre Calculus Notes: Complex Numbers [Pdf]
The resource discusses complex numbers. Topics examined are the complex plane, complex conjugates, dividing complex numbers, and complex zeros of functions.
Colby College
Spanish Language & Culture: El Preterito Formas (Part 1)
These exercises provide a very extensive review of irregular verbs, stem-changers, and spelling changes in the preterite tense. Conjugate verbs to match the subject. Answers may be checked and corrected.
Curated OER
Web Gallery of Art: J'etois Enchante Du Spectacle Touchant De Cet Amour Conjugal
An image of "J'etois enchante du spectacle touchant de cet amour conjugal", created by Jean-Michel Moreau in 1776 (Engraving).
Language Guide
Language Guide: Preterite
This verb conjugation site is a great review of the formation of the forms of the regular preterite forms as well as those with spelling changes, stem-changes, and irregular forms. All sections have links to verb conjugation practice.
Language Guide
Language Guide: Irregular Stem Changes
Learn and practice the correct formation of stem changing verbs in Spanish. A link to interactive verb conjugation practice is provided under the grammar explanation.
Oklahoma State University
Oklahoma State University: Acid Base Overview
Beginning with the example of the hydrangea, this page gives a good overview of acid-base chemistry.
Other
Teachers and Families Working Together: Sit or Set Quiz
Ten sentences containing boxes that need to be filled with "sit" or "set" depending upon the context of the sentence. Students get immediate feedback about their answers, and a total score is kept throughout the exercise.
Languages Online
Languages Online: Regular Present Tense
A brief explanation of regular present tense conjugations introduces a variety of nine exercises that practice each type of conjugation -ar, -er, and -ir. Endings are first matched to pronouns, and then gap-fill exercises provide verb...
Languages Online
Languages Online: The Preterite Tense (Regular Verbs)
A brief explanation of the preterite tense and of its regular conjugations introduces a variety of exercises that practice each type of conjugation -ar, -er, and -ir. Endings are first matched to pronouns, and then gap-fill exercises...
Colby College
Spanish Language & Culture: Subjunctive or Indicative (Part 2)
Fantastic review of subjunctive and indicative tenses. Examine the verb in the main clause. Then provide the correct conjugation of the verb given in the subordinate clause, or keep it unchanged in its infinitive form. Type in the...
Cold Spring Harbor Laboratory
Dna From the Beginning: Bacteria and Viruses Have Dna Too.
Bacterial conjugation and experiments with viruses indicated that they must also contain DNA. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on...
Language Guide
Language Guide: El Pasado, El Futuro, El Condicional
The past tense, the future tense and the conditional tense are modeled and explained with links to interactive practice activities where students can see and hear the verb conjugations.
Languages Online
Languages Online: Time Phrases and Verbs
Good exercise for practicing time phrases and verb conjugations! A true test of a student's comprehension of time and tenses. Matching, fill-in-the-blank, multiple choice, and crossword exercises provide excellent practice with gerunds,...
Dartmouth College
Dartmouth College: Acids, Bases, and Buffers 1: Monoprotic and Polyprotic Acids
In this experiment, you will explore the behavior of the monoprotic acid (acetic acid) and the polyprotic acid (phosphoric acid). By titrating, you will examine the acid and conjugate base species present across the pH scale and the...
Colby College
Spanish Language & Culture: Indirect Object Pronouns
This online exercise is for practicing the substitution of the pronoun for the indirect object of a sentence. Also practices conjugating the verb correctly in the present indicative tense. An English translation prompts the student to...