CK-12 Practice Advantages
|CK-12||IXL||DreamBox||BrainPop||HMH Go Math|
|Pricing (per month/student)||FREE||$19.95||$12.95||$10.95||$9.99|
|Hints/Step-by Step solutions|
|Individualized content recommendations|
|Add/Edit your own questions|
|Mobile apps (Smartphones and tablets)||tablet only||iPad only|
|Math coverage||1-12 Math||K-12 Math||K-8 Math||K-12 Math||K-8 Math|
|Science coverage||6-12 Science||2-5 Science||K-12 Science|
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CK-12 practice is also enriched by multiple modalities:Modalities are ways of learning, for example, text and videos.