Check out the lecture about problems with prepositions and highlight the correct verb sin the following sentences. I'll post my answers at the end of the week :)

1] Every word parents in talking to their child [says/say] sends a message about how they should think about themselves.

2] A parent who praises children's intelligence even with the best of intentions still [causes/cause] harm to motivation and performance.

3] Everyone working with children [needs/need] to understands the importance of praising hard work.

4] Parents and teachers both at home and at school [has/have] to focus on children's effort to help them be successful when they face challenges.

5] Praises for intelligence and talent [causes/cause] children to be less motivated in the face of something very difficult because they fear they will fail and show they are not smart or talented.

6] The ideal students going to college [values/value] learning for its own sake, and they keep trying in the face of challenges, so they can really learn.

7] Some educators at university [believes/believe] that lowering standards will give students more success; however, low standards for any student simply [leads/lead] to a poorly educated student.

8] Instead, growth mindset professors at university [needs/need] to offer real challenges while also giving students the means of succeeding through appropriate practice and a nurturing atmosphere to learn.

9] Fixed mindset coaches in college or in a professional league [harms/harm] their athletes when they belittle and degrade them for failures.

10] Coaches in the growth mindset area [helps/help] their athletes with preparation and effort, and they focus on practice and commitment rather than winning any particular game or event.

1.say

2.causes

3.needs

4.have

5.cause

6.value

7.believe,lead

8.need

9.harm.

10.help

Step-by-step explanation

1] Every word parents say in talking to their child sends a message about how they should think about themselves.

[Says] third person singular while [say] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here [parents] is plural so our verb must be also plural

2] A parent who praises children's intelligence even with the best of intentions still causes harm to motivation and performance.

[Causes] is the  third person singular while [cause] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject[parent] is singular so our verb must be singular.

3] Everyone working with children needs to understand the importance of praising hard work.

[Needs] is the third person singular while [need] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [everyone] is singular so our verb must  be singular

4] Parents and teachers both at home and at school have to focus on children's effort to help them be successful when they face challenges.

[Has] is the third person singular  while [have] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [parents and teachers] is plural so our verb must be plural

5] Praises for intelligence and talent cause children to be less motivated in the face of something very difficult because they fear they will fail and show they are not smart or talented.

[Causes] is the third person singular  while [cause] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [praises] is plural so our verb must be plural

6] The ideal students going to college value learning for its own sake, and they keep trying in the face of challenges, so they can really learn.

[Values]  is the third person singular  while [value] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [students] is plural so our verb must be plural

7] Some educators at university believe that lowering standards will give students more success; however, low standards for any student simply lead to a poorly educated student.

[Believes and leads] are the third person singular while [believe and lead] are third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subjects [educators and standards] are plural so our verb must be plural

8 Instead, growth mindset professors at university need to offer real challenges while also giving students the means of succeeding through appropriate practice and a nurturing atmosphere to learn.

[Needs] is the third person singular while [need] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [professors] is plural so our verb must to be plural.

9] Fixed mindset coaches in college or in a professional league harm their athletes when they belittle and degrade them for failures.

[Harms] is the third person singular while  [ harm] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [coaches] is plural so our verb must to be plural.

10] Coaches in the growth mindset area help their athletes with preparation and effort, and they focus on practice and commitment rather than winning any particular game or event.

[Helps] is the third person singular while [help] is third person plural verb form used with plural. Subject verb agreement dictates that a plural subject takes a plural verb and vice versa. Here our subject [coaches] is plural so our verb must be plural.